2011-12-29 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- RELEASED VERSION 1.5.1

2011-12-29 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- Added the 'fixed relative' number formatting style.

2011-12-28 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- Added 'const plot mark mid' and 'jump mark mid' plot handlers.
	- Added 'log ticks with fixed point' style

2011-12-22 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- Patched tikz ellipses and circles such that they automatically use
	pgfplots transformations

2011-12-19 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- patchplots lib: added 'patch type=polygon'

2011-12-17 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: now, 'minor xtick=data' will also work as documented.
	- improved docs for \addplot {<data>} node[pos=<fraction>]
	- finished feature: \addplot {<data>} node[pos=<fraction>] now outputs the
	inverse coord trafo (if any) when using \pgfplotspointplotattime.

2011-12-16 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: \addplot[decorate,...] did not work.
	- fixed bug: \addplot[postactions={...},...] did not work.
	- fixed bug: \addplot[preactions={...},...] did not work.

2011-12-10 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: axis background path for 2d axes was not filled

2011-11-03 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- PGF bugfix: added FPU support for ==, !=, <=, >=, ?

2011-10-29 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed problem with pgf number printer: it introduced spurious spaces
	I updated the pgf backw. compatibility layer accordingly
	
2011-10-23 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: view={0}{90},axis equal  failed.
	- fixed bug: \pgfplotstabletranspose with 'colnames from=<first col>' failed
	- fixed bug: stacked plots and logs did use the wrong math format (the bug
	was introduced two weeks ago)

2011-10-22 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: contour prepared format=matlab did not properly if one
	contour level has multiple segments.
	- contour filled: introduced sanity checking to detect if the input
	sequence is sorted as assumed

2011-10-15 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- provided implementations of \addplot ... node[pos=<p>] {}  for scatter and bar plots.

2011-10-13 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: 'stack plots=y,xmode=log' did not work
	- added feature 'trim axis group left' and 'trim axis group right'
	- fixed bug: markers in polar plots did disappear unless their angle was 0

2011-10-08 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved plot loaded table: added sanity checking for the unsupported \thisrow feature 

2011-09-24 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved 'node[pos=<fraction>]' feature: now, \pgfplotspointattime
	allows to access the logical coordinates of that point.

2011-09-21 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added 'scatter rgb', 'scatter cmyk', and 'scatter explicit color' styles

2011-09-03 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- new nodes at time in pgfplots feature: used backwards gradient for last point
	- new nodes at time: added feature 'pos segment=<plot segment>'
	
2011-09-02 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- implemented support for nodes at time in plots, i.e.
	\addplot... {.....} node[pos=<fraction>]
	missing are specifics for plot types and documentation

2011-08-31 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- documented 'execute at begin axis' 

2011-08-22 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: 'raw gnuplot' surface input did not work well because
	pgfplots used 'samples' and 'samples y' to assign the input matrix
	dimensions

2011-08-10 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: Markers in legends have not (always?) been filled properly
	because the every axis legend style sets 'fill=white'.

2011-08-10 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: "log origin=0" was wrong (it placed it at 1 = log(e) ). 

2011-08-02 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: 'ytick=\empty' in semilogyaxis failed with compilation error

2011-07-29 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- RELEASED VERSION 1.5

2011-07-25 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added \pgfplotsplotfromname{<label>} macro which does the work for \ref{<label>}

2011-07-25 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed \axisdefaultticklabel: it should not contain math mode switches.
	- fixed bug: 'scaled . labels=manual' did not allow \pgfmathparse.
	- fixed bug: "origin" of logarithmic axes with -infty, not 0. 

2011-06-26 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed a lot of typos in manual and removed warnings
	- removed "Missing-character"-Warnings
	- polar lib: implemented marker clipping 
	- fixed incompatibility between insdljs and babel with 'spanish' option
	I also contacted the author of the acrotex-bundle
	- fixed bug with 'log basis 10' and loglog plots

2011-05-14 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug introduces last week: hist plots tried to transform empty axis limits
	- wrote docs for Tikz interoperability
	- fixed bug: now, one can use macros inside of the paranthesis of plot coordinates

2011-05-09 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added '/pgfplots/scale' style which should only scale the axis

2011-05-08 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved coordinate filters and -transformations such that they can be
	applied to hist/data and quiver/u and the-like as well

2011-05-07 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug in symbolic coords: it was not possible to provide different
	sets for x and y
	- added support for hist and quiver such that they can use coord filtering
	as well
	- fixed bug: histogram computation now uses an internal threshold to
	reduce rounding effects during "getbinfor" 

2011-05-01 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved contour external such that it works also if no end-of-scanline
	markers have been found in the input.

2011-04-30 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: using \begin{scope}[no markers] or similar constructs will now work
	- number printing: added '1000 sep in fractionals' switch
	- fixed bug: hist now advances the coordinate index (for hist/data filter)

2011-04-29 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: axis line paths are now closed for boxed axes

2011-04-28 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: the 'anchorborder' of the axis shape was wrong such that 
	the connection -- (anAxis) failed.
	

2011-04-28 Bastian Sauert <sauert@users.sourceforge.net>
	- fixed bug: 'legend to name' and 'every legend image post' did not work
	together

2011-04-25 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: axis line paths are now closed (using --cycle for boxed axes)
		-> causes regressions with axis line decorations

2011-04-20 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- table package: added 'every row <index> column <index>' styles and their
	variants.
	- table package: added 'string replace*' preprocessor style.
	- table package: improved style evaluation of cell formatting styles
	preproc cell content, assign cell content, and postproc cell content

2011-04-18 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed incompatibility with memoir class: now, 'legend to name' works
	also in memoir subfigures.
	- improved error message of table package when encountered encoding problems

2011-04-17 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- implemented /pgf/number format/relative formatting style
	- adjusted every contour label style to use the new relative number
	formatting style.

2011-04-16 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: new CMYK interpolation in colormaps inserted a comma at the wrong position
	- worked on docs

2011-03-16 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- experimented with 'smithchart mirrored' feature

2011-03-13 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved 'scale uniformly' such that it also works for 2d axes.
	- wrote first draft for docs on 'scale mode'.

2011-03-11 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- dateplot lib: fixed rounding inaccuracy which allowed 0:60 instead of 1:00

2011-03-09 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- Improved manual (version numbers, mail address)
	- Improved default styles for polar lib (title style and legend style)
	- Improved default styles for smithchart lib (title style and legend style)

2011-02-27 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- finished a lot of refactoring applied to the test framework.
	- introduced further compatibility option which allows to restore old
	scaling features (/pgfplots/compat/scaling)
	- added 'execute at [begin|end] plot visualization' keys and documented
	example how to combine that with \usepackage{ocg}

2011-01-20 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed 'x expr=\coordindex' bug when used in \addplot table \structure

2010-10-29 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved TeX-programming-notes.tex (thanks to Frederik Heber!)

2010-10-20 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: log basis x and plot expression (the sample logarithmically
	feature) did not work together.

2010-10-15 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added new predefined cycle list 'mark list*'
	- improved 'mark list': the otimes* marker now has a better visible
	distinction between fill and stroke
	- improved 'mark list': the fill color can now be specified manually with
	'mark list fill'

2010-10-14 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- documented CMYK colormaps and shadings.
	- provided automatic changes to the colorbar styles such that colorbars
	also support CMYK without user input.

2010-10-13 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- documented new pgf markers.
	- provided access to the final axis limits using
	\pgfkeysvalueof{/pgfplots/xmin}.
	- patch plot handler: improved display of sharp triangle corners by
	added the 'every patch' style with initial value 'miter limit=1'
	- added support for CMYK colormaps, and CMYK shadings.
	- added 'colormap default colorspace' feature

2010-10-11 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved the \addplot3 graphics manual section (and fixed a small bug in
	it)
	- improved docs for contour plots
	- improved access of contour external to internal variables.

2010-10-06 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- \addplot3 graphics: added support for reversed axis (untested)
	- fixed bug: 'scale mode=scale uniformly' did not work if z=(0,0).

2010-09-30 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- polar lib: improved default tick positions

2010-09-29 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: there was a comma missing in the line style keys (inner axis
	line style and outer axis line style)

2010-09-26 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: explicitly provided unit vectors are now processed with the
	floating point unit, thereby allowing also extended data ranges

2010-09-25 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- polar axis: improved limit updating routines
	- polar axis: enlarge x limits (degrees) is now disabled, enlarge y limits (radius) only for
	upper range 
	- polar axis: improved default tick pos
	- polar lib: added support for radians with the 'data cs=polarrad' key
	- polar lib: wrote documentation

2010-09-24 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added 'data cs' feature (and removed the temporary 'output cs' key)
	now, automatic conversions between coordinate systems are possible
	- polar axes: allowed \addplot3 (third coordinate is ignored).

2010-09-22 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: the clickable library now checks whether it is loaded before
	pgfplots and complaints if so
	- fixed bug: '\addplot[only marks]' had no default plot mark. It uses
	'mark=*' now.
	- fixed bug: removed "bashishm" in matlab2pgfplots.sh

2010-09-21 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug with unit vector ratio: there have been expansion problems in
	certain cases which lead to wrongly scaled graphics or compilation failure
	- fixed bug in polar lib

2010-09-16 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved plot graphics 3D: improved examples and added 'snap z' feature.

2010-09-15 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved automatic normal vector detection 
	- improved plot graphics 3D

2010-09-11 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved bugtracker

2010-09-09 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: legend to name and colorbar to name have been broken
	- improved handling of 'empty line=auto': for mesh/surf, it will
	automatically be set to scanline, otherwise it is 'jump'. It now also has a
	backwards compatibility switch activated by 'compat' which uses 'none' for
	2d plots
	- improved consistency between 'plot box ratio' and 'unit vector ratio':
	both now accept space--separated arguments (plot box ratio also brace
	constructions for backw. compat)

2010-09-08 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added 'table/every nth row' key
	- fixed bug: now, extra tick labels can have a different 'ticklabel pos'
	than the original axes (it was broken since 1.2.2)
	- fixed bug: it is now allowed to provide '#' (hash sign) in \addplot
	option arguments (for example to define 'x filter/.code={...#1...}')
	- added support for \pgfplotsforeachungrouped \a/\b in {...} syntax

2010-09-07 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added 'table/comment chars' key.
	- added 'table/skip first n' key.

2010-09-01 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added 'scale mode=stretch to fill|scale uniformly' and a preliminary implementation.

2010-08-31 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- patch plots: added 'patch table with individual point meta' to allow
	per-patch cdata for every vertex
	- patch plots: improved handling of unbounded input coords.
	Now, 'mesh input=patches' automatically sets 'empty line=none'.
	Other 'empty line' values could have interfered with jump processing.
	- documented '\addplot3 graphics' (still produces compilation bugs :-( )

2010-08-29 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- patchplots lib: added 'quadratic spline' and 'cubic spline' patch types.
	- patch plots: added 'patch table with point meta' to allow per-patch cdata.
	
2010-08-27 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- now, \addplot+ [...] is possible -- the space gobbling did not work.

2010-08-26 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- provided support for \label<slidespec> to allow beamer's \label
	modifications with PGFPlots.

2010-08-22 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved new coordmath framework

2010-08-20 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved legend for xbar stacked and ybar stacked
	- improved bugtracker

2010-08-18 Christian Feuersaenger <ludewich@users.sourceforge.net>
	-  fixed bug in processing of \addplot[ybar] and \addplot[xbar]
		There was a problem in conjunction with 'nodes near coords'

2010-08-12 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- Fixed processing of (x,y) coordinates in 3D axes: they invoked the 2D
	point command now (to allow distinctions in other axes classes)

2010-08-10 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved the 'sloped like x axis' key: it now accepts optional arguments
	to control the transformation.

2010-08-06 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added 'minor xtick' key which allows to provide non-uniform minor tick
	positions

2010-08-10 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- ternary lib: added 'tielines' plot handler

2010-08-05 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- RELEASED VERSION 1.4.1 Changes since 1.4:
		- Improved compatibility with windows gnuplot and logarithmic scaling

2010-07-28 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- implemented first draft of smith charts
	- implemented support for \pgfplots@ticknum during tick typesetting

2010-07-27 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- activated math parser for 'view' arguments and improved docs on 'view'

2010-07-22 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- mesh plot handler: fixed broken support for interrupted mesh plots
	- Fixed bug: the windows version had problems with gnuplot when used with
	logarithmic scales:
		- gnuplot 4.2 does not identify itsself, causing the new check to bail
		out with error
		- gnuplot 4.4 worked, but not if the temporary gnuplot fails contains
		a directory.
		Both is fixed now.
	
2010-07-20 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- Added 'hist/data min' / 'hist/data max' keys.

2010-07-14 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- RELEASED VERSION 1.4 Release notes:
	    - Added support for detached legends and detached colorbars
		- ybar (and similar plots) can now be mixed with other plot types
		like line plots.
		- improved legend formatting
		- added 'restrict x to domain*' which cups coordinates outside of a specified domain (same for y and z)
		- Added support for linear regression
		- Inline tables,
		- Lots of bug fixes


2010-07-14 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added sanity checking for empty colorbars.
	- using colorbar source now implies 'point meta rel=per plot' to get
	consistency between the plot's colors and the colorbar.

2010-07-12 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- wrote prototype for 3d plot graphics. It's already partially functional.
	- Added 'x post scale', 'y post scale' and 'z post scale' features to
	increase the unit vectors after all scaling things have been applied.

2010-07-10 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: 'xlabels at=edge top' and 'ylabels at=edge right' did not
	adjust the ticklabel pos.
	- improved error messages when \usepackage{pgfplotstable} is required
	- documented (briefly) how '\addplot table[x={create col/.....}] works in the reference
	for \addplot table
	- documented and improved 'trim left' / 'trim right' feature (EXPERIMENTAL
	PGF CVS VERSION REQUIRED)
	- improved docs for alignment section.
	- improved docs for 'legend image post style'

2010-07-09 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: the check whether lists are terminated by '\\' failed if '\\'
	occured within the list. This affected mainly legends and tick label
	lists.
	- improved and documented customized legends, including optional
	appearance keys for specific legend texts
	|\addlegendentry[<options>]{<text>}| and documentation for multiline
	legend entries.

2010-07-06 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- the 'colorbar to name' and 'legend to name' features are now implemented
	using \label. Thus, the common way to insert the resulting pictures is to
	use \ref -- it works in the same way as any other latex label.
	- fixed bug: 'clip=false' did not apply to markers.

2010-07-04 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- groupplots: added support for 'xlabels at=edge top',
	'ylabel at=edge right' and adjusted the 'xdescriptions at=edge top' and 
	'ydescriptions at=edge right' accordingly.


2010-07-01 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- documented linear regression feature in pgfplots.pdf


2010-06-29 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- ybar now also supports line plots.
	- added 'update limits' boolean as shortcut for \pgfplotsinterruptdatabb
	- wrote \numplotsofactualtype and \plotnumofactualtype (allows to combined
	bar plots with other plot types (like line plots) --> tests to check
	combination of bar plots with other plot types would be good)
	- implemented ybar with these macros
	- reimplemented key filter such that it allows plot handlers. (might break
	compatibility with existing images; recompile many old documents to check
	it)

2010-06-28 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- patchplots lib: added 'tensor bezier' patch.

2010-06-27 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- documented patch plots.
	- Bugfix for point meta=f(x): it is now evaluated inside of the survey
	phase

2010-06-25 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- patch plots: implemented refine for biquadratic.
	- fixed bug: 'each nth point' worked only for #1<10

2010-06-24 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- patch plots: implemented 'refine' feature (refines to same element)
	- patch plots: implemented 'refine,patch to triangles' (results in triangles)
	- patch plots: implemented 'refine' for triangles (longest edge bisection)
	- high order patch plots are now a separate library.
	- patch plots: implemented 'refine' for bilinear
	
2010-06-23 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- patch plots: implemented internal z buffering for bilinear and
	biquadratic patches.
	- patch plots: added support for 'patch to triangles,patch type=bilinear'.
	- patch plots: added support for 'patch to triangles,patch type=triangle quadr'.

2010-06-22 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- quadratic triangle: changed node sequence.

2010-06-21 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- nodes near coords align now accepts some standard anchor names and
	appends 'anchor=<value>' automatically.

2010-06-20 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- rewrote surf/mesh/patch plot API.
	- added support for 'patch type=line|triangle|rectangle|bilinear|triangle quadratic|biquadratic'
	and coons type shadings
	
2010-06-17 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- legend to name: now supports \numplots
	- added support for \scope/\endscope inside of an axis.
	- added preliminary support for 'ycomb' and 'ybar'

2010-06-16 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: plot graphics and legends did not work.
	- fixed bug: providing a colormap inside of \addplot resulted in problems
	with dimen parsing.
	- fixed bug: 'every extra [xyz] tick' did not allow all tikz options (I
	introduced a scope to fix it)
	- \ref, \pgfplotslegendfromname, \pgfplotscolorbarfromname etc now support
	separate file names when used with the external library.
	- fixed bug: colorbars and french babel have been incompatible.

2010-06-14 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: log basis X was broken in the meantime

2010-06-11 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- optimized runtime of colormap serialized from O(N^2) to O(N) 

2010-06-09 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: the 'every table' style now has higher precedence than
	options provided in square brackets (the old variant yielded either problems with
	row sep,col sep keys or with '/.add={}{}' inside of options)
	- fixed bug: stacked plots for logarithmic scales now produces correct
	output
	- improved compatibility of detached legends/colorbar/\ref legends with
	external lib
	- fixed bug: the new plot handler framework activated the FPU too early,
	causing changes in line width to use the FPU 
	- fixed sanity checking for 'table/unique' style and provided meaningful error messages

2010-06-08 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: 'ybar,every node near coord/.append style={scale=0.7}'
	did not work properly.
	To do so, I eliminated unnecessary key family assignments
	- fixed bug: 'nodes near coords' and stacked plots did not work
	- fixed bug: 'point meta' and stacked plots did not work

2010-06-07 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- patch plots: added 'patch table={<connectivity file>}' feature

2010-06-06 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- polar library: tick label positioning and empty axis handling
	- polar library: introduced check to avoid double tick label at lower and upper end 

2010-06-02 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- documented patch plots
	- improved z buffer=sort

2010-06-01 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added support for patch plots
	- added 'shader=faceted interp' (experimental; its really inefficient)

2010-05-28 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- reduced save stack usage
	- linear regression: x value is now determined from context
	- \addplot table: allowed simple in-line create-on-use specifications 
	like \addplot table[y=create col/linear regression]

2010-05-26 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added key aliases 'legend reversed' = 'reverse legend' and 'legend
	transposed' = 'transpose legend'
	- generation of .dep files is now postponed until it is clear that the
	file exists.
	- fixed bug: shader=interp and mesh/ordering=y varies produced corrupted
	results.
	- fixed bug: shader=interp consumed too much stack save space.

2010-05-24 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added 'contour/labels over line' style
	- clickable: fixed clickable coords with unbounded or empty coordinates 
	- ternary: improved docs and fixed ternary limits relative.

2010-05-22 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- improved docs
	- bar cycle list: added two more entries
	- plot graphics: added the 'points=' feature which allows to provide more
	than 2 points. Now, the graphics is placed into the bounding box of all
	provided coordinates.

2010-05-21 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- worked on ternary stuff

2010-05-19 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed problem with `empty lines=nan' outside of an axis (for example in
	table typesetting)
	- table package: during lazy column creation, the macro \pgfplotstablename
	expands to the currently processed table. This is now used as default for
	linear regression.
	- \addplot table:  read completely now has the default value `auto' which
	checks for 'create on use'. Thus, you can provide 'create on use' columns
	in plot sources.
	- linear regression: the scaling (linear/log) is now taken automatically
	from an embedding axis.
	- added 'transpose legend' style

2010-05-15 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- contour plots: added support to read the output of matlab's contour plot
	algorithms (contour prepared format=matlab)
	- contour plots: added support for 'contour gnuplot' which invokes gnuplot
	to compute contours and invokes 'contour prepared' afterwards.
	- contour plots: also added generic 'contour external' interface. It can
	even support matlab (although that's probably too slow).
	- added hist/cumulative flag

2010-05-13 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- added polar axes library
	- wrote utility functions \pgfplotsmathpoltocart and
	\pgfplotsmathcarttopol to work with polar/cartesian coordinate conversion.

2010-05-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- clickable lib: added support for multi-line fields + richtext formatted
	clickable coords
	- added 'legend cell align=left|right|center' styles to reduce the amount
	of typing for this task.

2010-05-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added ternary library for three-phase diagrams (triangular axes).
	- added support for ternary lib in clickable lib


2010-05-06 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- table package: improved accuracy during gradient loglog.
	- added possibility to exchange \includegraphics in plot graphics.

2010-05-03 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- fixed bug: \addplot table (without '[]') sets 'x index=0,y index=1'
	instead of using their actual value.	

2010-04-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- clickable lib: now supports reversed axis (and other non-standard
	directions for x and y axes)
	- clickable lib: has now support for 3D axes as well (snap--to--nearest feature)

2010-05-05 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed handling of colormap mesh width + reinterpolation. It seems it was
	broken or at least not fully functional. 
	Now it appears to work, is more robust and provides more information on error.

2010-05-03 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- fixed bug: \addplot table (without '[]') sets 'x index=0,y index=1'
	instead of using their actual value.	

2010-04-25 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented missing \thisrowno (and \nextrowno and \prevrowno) macros
	inside of \pgfplotstablecreatecol.

2010-04-26 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- clickable lib: `clickable coords' now cycles through points on the same
	position.
	- fixed bug: named nodes inside of groupplots produced infinite loop

2010-04-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug: 'enlargelimits' did not properly update axis fields; leading
	to wrong automatically generated ticks.

2010-04-21 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- table package: Fixed bug in 'unique' style. It worked only for the first
	column.
	- renamed 'contour filled' to 'contour prepared filled'
	- fixed bug: named nodes did not function properly in conjunction with pgf 2.00

2010-04-20 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- clickable lib: added square marker to highlight the clicked position
	- clickable lib: Added 'clickable coords' and 'clickable coords code'
	features which allow a snap-to-nearest feature *and* user-defined,
	additional information when clicking onto data points.

2010-04-18 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added plot handler 'contour prepared' which relies on already
	precomputed contour line coordinates (has preliminary support for filled
	contours)

2010-04-14 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added 'empty line=auto,scanline,jump,nan' key which allows interrupted
	plots at input empty lines

2010-04-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added 'restrict x to domain*' which truncates to domain boundaries
	instead of assigning -inf or +inf.

2010-04-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- legend to name and colorbar to name: Improved compatibility with context by introducing proper \protect ion

2010-04-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: setting ticklabel pos and axis lines to an incompatible
	choice discarded tick lines.
	- colorbar data ranges (point meta min/max) is now provided in scientific
	notation, not as low level float.
	- Fixed bug: |colorbar sampled line| and |colorbar left| where
	incompatible. 

2010-04-07 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added extensible layer for coordinate arithmetics. 
	Now, there is a unified math operation interface which uses the correct
	math engine transparently (pgf basic math for log axes, float for linear
	axes currently).

2010-04-06 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added 'colorbar source' feature

2010-04-01 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- Fixed 3D axis scaling inaccuracies (by using float arithmetics)

2010-03-31 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Released version 1.3.1

2010-03-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added 'colorbar sampled' and 'colorbar sampled line'

2010-03-25 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Imported all patches to PGF written by Christian Feuersaenger.
	- Fixed bug: axis descriptions for |small| and |footnotesize| styles were
	too large
	- added |tiny| style

2010-03-24 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: overlay did not work properly
	- Fixed bug: grids worked only for boxed axes
	- Now, anchor can also be the value of a named node inside of the axis.

2010-03-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: \pgfplotstablesave did not reset 'postproc cell content'

2010-03-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- removed spurious spaces in table package

2010-03-09 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added |sort| key for tabletypeset.

2010-02-24 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: the auto-generation of .dep files could fail.
	Now, it will only be generated (automatically) if we are currently
	externalizing.
	- improved (wrote) docs for histogram plots and quiver
	plots.

2010-02-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added \pgfplotsutilstrcmp
	- rewrote API for 'iflessthan' of the array sort. It is now a general
	utility function.
	- added a lot if styles for comparison functions, among them
	'fixed <', 'float <', 'int <', 'string <', 'date <' and corresponding '>'
	variations.
	- Fixed bug: the 'date type' was broken due to a missing comma

2010-02-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: providing a point meta expression twice as in 'point meta=<expr>, point meta=<expr>' yielded an infinite recursion 
	- Provided first rudimentary version for \pgfplotstablesort
	- Added first version of a histogram plot handler.

2010-02-20 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed docs for \addlegendimage which was documented using the wrong name |\legendimage|
	- Allowed paragraphs in legend texts (was broken before)
	- the updatelimits and parsecoordinates are now available throughout the
	complete axis.
	They can also detect 3d coords automatically and enable 3d axes if so.
	\addplot will use a specialized variant which respects \addplot vs
	\addplot3

2010-02-18 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- number printing: added 'sci generic' style to customize the appearance
	of scientific format and a 'verbatim' style which doesn't use TeX macros
	for the formatted numbers.

2010-02-16 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- added 'variance list' to regression feature
	- added |trim cells| to table input.
	- the table typesetting routines are now in a separate file.
	It is now necessary to use \usepackage{pgfplotstable} to use them (as
	documented).

2010-02-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed problem with table prepare catcodes and argument parsing
	- finished user interface and continued implementation for 'linear
	regression'

2010-02-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented col sep=& (or col sep=ampersand)
	- added support for 'linear regression'

2010-02-09 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added support for inline data as argument to 
	\pgfplotstableread{
		row 
		row2
	}{\macro}
	- inline tables are now accepted directly for \addplot table and
	\pgfplotstabletypeset

2010-02-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added choice 'point meta={TeX Code={\def\pgfplotspointmeta{42}}}' and
	'TeX code symbolic'.

2010-02-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed problem with spurious white space occuring during table input command

2010-02-02 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added 'numeric type' to table package to switch back from string type or
	data type.
	- added 'numeric as string type' to table package.
	- tuned quiver plot handler


2010-01-31 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added user interface and tests to quiver plot handler
	- fixed some bugs in the new internal structure. There will be more
	changes to prepare for Till Tantau's new Data Visualization Engine

2010-01-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- First draft of a quiver plot handler (undocumented).

2010-01-29 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Rewrote internal structure to allow better extensability of the plot
	handlers, particularly the number of accepted input data fields.

2010-01-26 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed problem with spurious white space occuring during table input command
	- added 'visualization depends on'.

2010-01-26 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Introduced 'compat=1.3' . The name 'compat=newest' was not not such a
	good idea since it might introduce a problem for following releases.
	- Emphasized key names in references to show that /pgfplots/, /tikz/ and
	similar prefixes are unnecessary.
	- Added character lists |table/ignore chars| and |table/white space chars|
	to handle special characters in input files.
	- Fixed the 'xticklabels' key such that it also accepts '\\' terminated
	lists. This fixes strange bugs with dots '.' as last characters in
	entries.

2010-01-21 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added sanity checks such that 'xmin/max' and friends can't be invoked
	within an \addplot.
	- plot gnuplot: added user customizable styles to change the dummy
	variables. The initial config will now use 'x' for 1d, 'x,y' for 2d, 't'
	for 1d parametric and 'u,v' for 2d parametric plots.
	- fixed bug: one couldn't use different log/normal scalings in a group
	plot. Relaxed sanity checking here.
	- added docs for |variable| and |variable y| which appeared to be missing.

2010-01-14 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- fixed that '\addlegendimage' did not respect the every plot styles.
	- added 'every legend image post' style.

2010-01-15 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added support to generate makefile dependencies for pgfplots input files
	automatically

2010-03-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: \pgfplotstablesave did not reset 'postproc cell content'

2010-03-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: \pgfplotstablesave did not reset 'include outfiles'
	- Added 'colorbar to name' feature: no, colorbars can be placed
	independently of an axis, even into the document's main text.

2010-03-19 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- changed 'legend to macro' to 'legend to name'.

2010-03-18 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: axis descriptions for |small| and |footnotesize| styles were
	too large
	- added |tiny| style
	- added |legend to macro|, a method to export the legend to a macro which
	can be used *outside* of the axis where it belongs to.

2010-03-16 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: 'draw=none' wasn't handled correctly. 

2010-03-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: the table package had spurious spaces

2010-02-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: the 'date type' was broken due to a missing comma

2010-02-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug: providing a point meta expression twice as in 'point meta=<expr>, point meta=<expr>' yielded an infinite recursion 

2010-02-20 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed docs for \addlegendimage which was documented using the wrong name |\legendimage|
	- Allowed paragraphs in legend texts (was broken before)

2010-02-18 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- number printing: added 'sci generic' style to customize the appearance
	of scientific format and a 'verbatim' style which doesn't use TeX macros
	for the formatted numbers.


2010-02-09 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed bug in auto cross referenced of table package manual


2010-02-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed problem with spurious white space occuring during table input command

2010-02-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed problem with spurious white space occuring during table input command

2010-01-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug: \coordindex for plot table from already loaded structure was
	wrong.

2010-01-21 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added sanity checks such that 'xmin/max' and friends can't be invoked
	within an \addplot.
	- plot gnuplot: added user customizable styles to change the dummy
	variables. The initial config will now use 'x' for 1d, 'x,y' for 2d, 't'
	for 1d parametric and 'u,v' for 2d parametric plots.
	- fixed bug: one couldn't use different log/normal scalings in a group
	plot. Relaxed sanity checking here.
	- added docs for |variable| and |variable y| which appeared to be missing.

2010-01-14 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- fixed that '\addlegendimage' did not respect the every plot styles.
	- added 'every legend image post' style.


2010-01-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug which occurs if 'legend style' is set *after* \begin{axis}.
	- plot gnuplot: restored support for the '/tikz/parametric' option: it did only work if
	one provided the prefix '/tikz/' explicitly
	- plot gnuplot: parametric plots now use the SAME dummy variables as plot
	expression. If you write variable=\x, 'x' will be the gnuplot variable. If
	you write variable y=\y, 'y' will be the second gnuplot variable.

2010-01-02 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Released version 1.3

2009-12-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- ticklabel cs did not respect the shift of 'tick align=outside'. Fixed
	that.

2009-12-29 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed a bug with line plots and plot expression.
	- fixed a rarely occuring bug in auto-tick positioning: the case "if just
	one tick position available" assumed log axes.
	- changed 'try min ticks' for 3D plots from 4 to 3 
	- implemented support for a "too few tick labels" check for linear axes
	- changed activation of 'every 3d description' such that it is processed
	earlier. It should now be possible to overwrite more keys for 3D plots.
	- updated docs for clickable lib.

2009-12-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- the color bar modification of yesterday was not completely correct,
	fixed that
	- width/height are now processed with \pgfmathparse
	- fixed bug in 'colorbar horizontal' style

2009-12-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved extensibility of the point meta input methods
	- fixed buggy treatment of some automatic cross references in manual
	- fixed bug: log basis x changed the formatting of logarithmic y and z
	axes as well. 
	- color bars can now be positioned using the axis description cs of the
	PARENT axis.

2009-12-18 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed buggy treatment of extra ticks in 3D axes

2009-12-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed a reverse axis special case which lead to improper placing of tick
	labels (they incorporated the tick width with wrong sign)

2009-12-11 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added and documented |[xy]bar legend| styles and |[xy]bar interval
	legend| styles
	- renamed 'every mesh legend' to 'mesh legend' for consistency
	- improved 'mesh legend' (rescaled and reshiftet it a bit)

2009-12-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed expansion bug in 'scatter/classes'
	- added the \addlegendimage extension which simply provides options for a
	further legend image.

2009-12-09 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added variant |xticklabels from table|

2009-12-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added \pgfplotstabletranspose command.

2009-12-07 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- the 'log basis *' implementation didn't handle unbounded coords
	correctly; fixed that

2009-12-05 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- fixed bug in processing of axis lines.
	The new version should also allow 3D axis line variations and reversed axes
	- fixed bug occuring for reversed axes and the 'above origin' (and
	friends) anchors.


2009-12-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed plot graphics and reversed axes
	- allowed reversed color bars
	- fixed axis line variations and reversed axes

2009-12-03 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added '3d box=complete' feature

2009-12-02 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- found and fixed bug: tick labels could penetrate the axis. This should
	no longer happen.

2009-11-26 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added \pgfplotsinvokeforeach
	- worked on docs

2009-11-24 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- fixed a (rarely occuring) bug in plot table where the detection if the
	arg is a file- or structure failed.

2009-11-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added the 'color list' cycle list which contains only colors (now
	markers). This might be handy in conjunction with |cycle multi list|.
	- updated docs.
	- a copy of the automatic image externalization 'external' lib is now
	available when using
		\usepgfplotslibrary{external}
	even without Tikz CVS installed.
	- 'width' and 'height' can now be queried with
	\pgfkeysvalueof{/pgfplots/width} while axis descriptions are processed.
	- extended the |function graph cut y| by a |foreach| feature to provide
	the input tables.

2009-11-19 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug with cycle multi list: it couldn't be overridden with cycle
	list or cycle list name.
	- added \addlegendentryexpanded

2009-11-18 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- wrote primitive exception handling for better error messages (in
	pgfplotscore.code.tex)
	- fixed \thisrow in create on use statements: it did not respect aliases.

2009-11-18 Nick Papior Andersen <zerothi@users.sourceforge.net>

	- Added a key |line legend| which sets the |legend image code| back
	to its original value. This makes it easy to use area legends 
	together with line legends
	- The docs have been updated accordingly. See the example under
	|area legend|

2009-11-15 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- auto xrefs now support point coordinate systems.
	- auto xrefs now provide an interface to deal with tricky active
	characters (for |-)

2009-11-13 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved sanity checking for plot file by introducing trailing 0 0 0 to each line

2009-11-11 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved docs for 3D coordinate ordering.
	- fixed bug with |samples y|.

2009-11-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved plot gnuplot and 3D interface
	- fixed some 3D plot expressions things (samples y, y domain where not
	completely correct)

2009-11-06 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- tuned the |footnotesize| style.

2009-11-03 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- added |rawx|, |rawy| and |rawz| math constants to access unprocessed
	input coordinates.

2009-10-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved loop macros

2009-10-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved the interface for |nodes near coords|
	- added starred key versions for |use mapped color*|, |nodes near
	coords*|, |scatter/classes*|. These starred versions APPEND code to |@pre
	marker code| insteaf of overwriting it.
	- documented |nodes near coords| and the starred variants for scatter
	plots.

2009-10-26 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added col sep=tab

2009-10-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed buggy xshift and yshift keys: they shifted axis descriptions too
	much
	- fixed buggy 'hide x axis': it lead to removal of *y*tick marks and grid
	lines.
	- during plot table: renamed \x, \y, \z etc to \columnx, \columny. They
	posed naming conflicts (and are perhaps useless anyway).

2009-10-20 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- It is now possible to access all table columns as long as |\addplot
	table| is working. Possible occurences are coordinate filters or point
	meta expressions.
	- |point meta={<expression>}| won't yield error messages any longer if the
	expression contains temporary control sequences like \thisrow.
	- rel axis cs now invokes the math parser.
	- added 'restrict expr to domain'

2009-10-14 Nick Papior Andersen <zerothi@users.sourceforge.net>

	- Added a MakeFile for the test folder. One can use
	this for compiling sections individually. I.e.:
		* make pgfplotstest.libs.groupplots.tex
	would yield only typesetting of the groupplots 
	test section.
	- Currently it cannot handle more than one section at a time
	although it can process the whole by calling:
		* make all
		* make test
		* make pgfplotstest.pdf
	which are all equivalent!

2009-10-13 Nick Papior Andersen <zerothi@users.sourceforge.net>

	- Changed documentation for units and groupplots library
	- Updated code of groupplots with filtering keys

2009-10-13 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Improved placing of axis labels: the |near ticklabel| anchor was not
	completely correct.

2009-10-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added |cycle multi list|.

2009-10-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added |axis background|

2009-10-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed buggy scanline detection for plot table.
	- fixed support for special anchors when non-rectangular shapes are used.
	- added support for legend in scatter/classes.

2009-10-06 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- revised manual and worked on cross referencing
	- fixed buggy tick show tests for non-boxed axis lines

2009-10-05 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- |plot coordinates| now supports mathematical expressions.

2009-10-03 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- Manual: added (auto-generated) document-internal pdf links and 
	implemented syntax analyser for codeexamples to 
	generate cross-references automatically.

2009-09-29 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed reversed axes for 3D axes
	- added new, experimental feature 'allow reversal of rel axis cs'. It
	affects 'rel axis cs' and 'ticklabel cs' in case of reversed axes.

2009-09-26 Nick Papior Andersen <zerothi@users.sourceforge.net>

	- added a new library which can group plots.
		* \usepgfplotslibrary{groupplots}
	- a new environment \begin{groupplot} has been created
	- within the environment a command \nextgroupplot[<option>]
	can be used.
	- groupplots can easily typeset several plots in a matrix
	style so that they are aligned
	- it is possible to limit the tick labels to one side of
	the matrix, be it x tick labels at only the top row or 
	the bottom row. Or the y tick labels only at the first or 
	last column, on the left or the right, respectively
	- a quick documentation for the new library has been
	introduced
	- \usepgfplotslibrary has been modified such that it 
	detects loaded files from \usetikzlibrary

2009-09-25 Nick Papior Andersen <zerothi@users.sourceforge.net>

	- restructured the reference manual file. All files:
		* pgfplots.reference.<name>.tex
	was in the old pgfplots.reference.tex file

2009-09-25 Nick Papior Andersen <zerothi@users.sourceforge.net>

	- changed the surfshading library name to be consistent with the
	new names. In conjunction the drivers of the surfshading library
	has been changed accordingly.
	- the unit library has a more customizable usage of typesetting units
	- the unit library automatically sets units on when loaded
	- updated the documentation according to changes done in unit library
	- the command \usepgfplotslibrary now loads both:
		* "tikzlibrarypgfplot.<lib>.code.tex"
		* "pgflibrarypgfplot.<lib>.code.tex"
	- added the environment \begin{pgfplotslibrary}...\end{pgfplotslibrary}
	to the manual which shows how the user can import a library. 
	Displaying the following:
		* \usepgfplotslibrary{<lib>}
		* \usetikzlibrary{pgfplots.<lib>}
	- updated the doc to use the above command where needed

2009-09-24 Nick Papior Andersen <zerothi@users.sourceforge.net>

	- added backwards compatibility for the libraries, i.e. recreated
	old files with only contents '\use...library{<package>}'
	- added the command \usepgfplotslibrary which should be used
	if users wants a clearer vision of where libraries are loaded from
	- moved the unit test into proper location
	
2009-09-24 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug: the \pgfplotspointaxisorigin was not clipped properly,
	resulting in number too large bugs.

2009-09-23 Nick Papior Andersen <zerothi@users.sourceforge.net>

	- changed the names of some of the files in the package. Namely:
		* doc/latex/pgfplots/pgfplots.reference.units.tex -> doc/latex/pgfplots/pgfplots.libs.units.tex
		* tex/generic/pgfplots/libs/tikzlibrarydateplot.code.tex -> tex/generic/pgfplots/libs/tikzlibrarypgfplots.dateplot.code.tex
		* tex/generic/pgfplots/pgfplots.units.tex -> tex/generic/pgfplots/libs/tikzlibrarypgfplots.units.code.tex
		* tex/generic/pgfplots/pgfplots.stackedplots.code.tex -> tex/generic/pgfplots/pgfplotsstackedplots.code.tex
		* tex/latex/pgfplots/libs/tikzlibrarypgfplotsclickable.code.tex -> tex/latex/pgfplots/libs/tikzlibrarypgfplots.clickable.code.tex
	This is done to be more consistent in naming convention. As old "pgfplotsclickable" and "dateplot"
	libraries has changed names former versions are not compatible. This should in some way be fixed.
	- updated the doc according to the new name convention
	- updated the "pgfplots.core.code.tex" to use the new names
	- changed the unit to a library and moved it to "libs" in manual
	- added a "mkdir" command in the MakeFile such that the user who has
	just downloaded the package doesn't need to make the "gnuplot" directory by hand


2009-09-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed table loading: the NL character was present as a space after each
	read line, which made col sep!=space buggy
	- fixed manual bugs

2009-09-20 Nick Papior Andersen <zerothi@users.sourceforge.net>

	- added the label units. It is now possible to add units in the labels such
	such that it can easily be maintained and edited. 
	- a documentation of the implementation is added.

2009-09-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added the 'plot box ratio' feature.

2009-09-09 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added the 'nodes near coords' feature (especially useful for bar
	plots). It draws nodes besides/above the coordinates and shows the
	coordinate value.
	- Added the 'variable y' feature.
	- Implemented support for non uniform color map specifications.

2009-09-07 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added |each nth point| filter
	- Added |restrict [xyz] to domain| filter
	- Improved docs

2009-09-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed 'unbounded coords=jump' for the log case

2009-09-03 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- Added first version of 'unbounded coords=jump' method.
	Appears to work for line plots as it ought to.
	- added support for mesh plots as well

2009-09-02 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- Implemented 'z buffer=auto' and 'z buffer=reverse x seq' and 'z
	buffer=reverse y seq' modes. The default z buffer for surface plots is now
	'auto'
	- changed drawing sequence of minor and major tick/grid lines.
	- Fixed bug related to 'forget plot' (legends didn't work as they should)
	- Fixed bug: /tikz/ybar and /pgfplots/ybar did not work as documented

2009-09-01 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed y tick scale label for the new label placement stuff.
	- Introduced sanity checking for point meta data.


2009-08-31 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added sanity check to avoid usage of \thisrow in point meta arguments.

2009-08-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- the '[xyz]tick=data' feature now suppresses multiple occurances of the
	same tick (a very simple method, it checks for *exact* matches only).
	- removed the cause of a missing character warning

2009-08-11 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed processing of 'z buffer=sort' for log axes.
	- Fixed buggy \ticknum handling: the '[xyz]ticklabels' lists did not work
	properly.

2009-07-30 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- added check for 'every 3d view {<h>}{<v>}' styles which may prepare
	specific options.

2009-07-29 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed |log basis [xyz]| processing in clickable lib.
	- clickable lib: there was a bug in the drag'n'drop gradient computation
	of semi log plots - gradients were computed base e although they should
	be base 10.
	- implemented 'mesh/ordering=colwise' for 'shader=interp'.


2009-07-27 Stefan Tibus <sjti@gmx.net>
	
	- Added the 'plot shell' and 'plot table shell' feature to plot output of
	arbirtrary system calls.

2009-07-27 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- added auto translation pgf => gnuplot for 'plot gnuplot'. It works for
	'^' => '**'.

2009-07-24 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added the 'tick scale binop' feature to allow simple change from '\cdot' to '\times'
	- added the 'log basis [xyz]' key. 

2009-07-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed positioning of tick scale labels for 3D case.

2009-07-21 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- replaced '\definecolor' by '\pgfutil@definecolor' for ConTeXt
	compatibility.
	- renamed 'ticklabel dist' to 'ticklabel shift' to provide a more
	consistent naming convention.

2009-07-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added sanity checking for non-existing colormaps

2009-07-07 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug with 'mesh/ordering=colwise'

2009-07-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added 'sloped like [xyz] axis' key for label alignment,
	- added '[xyz]ticklabel cs' coordinate system,
	- added 'near [xyz]ticklabel' anchor for every node

2009-07-02 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed a bug related to the 'sqrt(num points)' thing for mesh plots (the
	check for rounding errors did not work as expected).
	- fixed bug in auto-scan line computation for plot table: it counted also
	the header line with column names.

2009-06-29 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed a bug in the 'meta min/meta max' handling: the arguments have not
	been parsed correctly (the bug is not that old)

2009-06-25 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added style 'every 3d description' and changed option processing such
	that description style changes are applied as soon as the axis' dimension
	is known (2d or 3d).

2009-06-24 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed treatment of 'scan line length' for some plot table special
	issues.

2009-06-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- using '/tikz/variable=\t' now also defines the shorthand function 't'
	ATTENTION: this requires the most recent PGF CVS version!
	- added temporary family for /tikz/variable to fix its usage in pgfplots'
	axes

2009-06-17 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- added draft for 'sloped' feature for axis labels
	- improved the special anchor label alignment: it does not respect the
	current transformation matrix (I renamed it to 'near ticklabel')

2009-06-16 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved sanity checking for short-hand styles for legend placement
	- improved sanity checking for surfshading lib
	- started to write code for label placement + backwards compatibility
	switches. It is not complete yet.

2009-06-15 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- improved interface for mesh/surface plots.

2009-06-11 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added |no marks| key and updated docs.
	- added short-hand styles for legend placement.

2009-06-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed shift transformations provided to an axis - these did not work
	previously [requires recent pgf version].
	- improved colorbar implementation
	- added 'ticklabel style' alias to 'tick label style'
	- improved support for pgf 2.00 backwards compatibility

2009-06-09 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- besides a lot of manual improvements, I have also fixed the |point meta min|/max 
	processing such that they work properly for the general case and for
	special cases.
	- implemented a user interface to draw arbitrary boxes in 'plot graphics'.
	- added small optimizations to key setting procedures.
	

2009-05-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- documented and improved the expression+table input method

2009-05-29 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed the 'ticklabel cs' for 2D plots - it queried 3D stuff which wasn't
	initialised.

2009-05-28 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed correct implementation of |overlay| for tick labels - my recent
	changes required bounding box modifications and disabled that.
	- Provided a (sophisticated) fix for the problem with legend styles:
	now, it is possible to set 'legend image code' in \addplot AND the legend
	remembers the draw modes correctly.
	- to do this, I used 'current plot style' here - which handles key paths,
	draw modes and all that stuff correctly.
	- added legend image for mesh/surface plots

2009-05-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed a (stupid) bug in the processing of skewed/rotated axis unit
	vectors (|x| or |y| keys). It is now processed correctly.
	- added sanity checking for stacked plots: now, an error message is raised
	if the number of points of successive stacked plots does not match.

2009-05-26 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed the implementation of 'current axis' for unfinished axes - it did
	not work since the rewrite of alignment features.
	- moved the declaration of the 'current axis' leight weight node before
	the processing of stored plots. This means it is possible to reference it
	in path/plot commands.
	- fixed the '\addplot+[  black]' bug - the white space doesn't hurt any
	longer.
	- \ref now works properly inside of moving arguments (as \caption) without
	the need of explicit \protect ion.

2009-05-25 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added 'reverse legend' feature, thanks to Tom Cashman for the
	implementation!

2009-05-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- now I remembered why `legend image code' did process its arguments in a
	separate scope -- and I restored it (and documented the change).
	Now: the plot style is activated before `legend image code' is evaluated.
	This allows to redefine `legend image code' inside of plot styles.
	- fixed bug: the re-using of outer normal vector did not work properly

2009-05-20 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed the default 'legend image code' things - they also needed to be
	changed.
	- added tolerances to tick placement code: now, tick labels are placed if
	they are no more than 0.05pt beyond the axis limits. The threshold can be
	configured.
	- improved manual section for tick docs: introduced subsections and moved
	special stuff into a "fine tuning" section.

2009-05-14 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed 'legend image code' - it did not provide the argument as
	documented.

2009-05-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Restructured the manual. Now, the "command reference" and "option
	reference" has been merged into one large "reference". 
	The new stuff should be easier to navigate.

2009-05-02 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- changed 'ticklabel pos' initial value to 'default'.
	- added '[xyz] dir={normal,reverse}' keys (work correctly for 2d, 
	not yet for 3d)

2009-04-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed several bugs which have been introduced in the latest changes

2009-04-24 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- added |preproc/expr| style to table package.
	- added |fonts by sign| style to table package.

2009-04-21 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed broken '[xyz] tick scale label style' keys

2009-04-20 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added the |value|, |abs value|, |upper| and |lower| options to enlarge limits.

2009-04-17 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added public API commands \pgfplotspointouternormalvectorofaxis,
	\pgfplotspointoutsideofaxis and the same for the ticklabelaxis.

2009-04-17 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added 'rel axis' coordinate system.

2009-04-14 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Moved sanity checking for end-of-scanline autocompletion out of standard
	plots.

2009-04-13 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- updated error bar implementation: it works now also for 3D plots and it
	is a more efficient.
	ATTENTION:
		*********this requires the PGF CVS version of 2009-04-13 or newer!*****
	- added support for end-of-scan-line markers for 'plot coordinates' and
	'plot file': empty lines end a scan line.
	This allows mesh input without explicitly providing 'rows' or 'cols'.

2009-04-09 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added a style for string symbols as input coordinates.

2009-04-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- `legend image code' now also evaluates pgfplots options. furthermore, it
	can be changed inside of options for \addplot.

2009-04-07 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added /pgfplots/colormap access=map|direct key.
	- simplified input format of colormaps
	- changed the anchors. Now, all anchors use the BOUNDING BOX of the axis
	instead of local coordinates. This does also work for 3D and for skewed or
	reversed axes.

2009-04-06 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- table package: improved handling for empty cells in create column
	statements. An empty cell will be considered as 'zero'.
	- fixed axis cs for 3D case
	- incorporated tick dimensions into 3D axis scaling (approximately as
	before for 2D axes)

2009-04-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed surface shading problem: both, pdftex and dvips now produce useful
	results and the resulting pdf/ps documents can be processed by
	ghostscript and standard viewers.
	Switching to BitsPerCoordinate=24 fixed the problem.
	

2009-04-03 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added public interface \pgfplotsmathviewdepthxyz and
	\pgfplotsmathfloatviewdepthxyz inside of an axes.
	- added 'point meta=<expr>' feature: \addplot[point meta={x+y+z},scatter] ...
	- removed the optimizations for the binary output sub-package - they did
	not work at all.
	- updated the manual examples for the new view parameters
	- finished the clip-path implementation so far. It appears to work
	correctly.
	- implemented first semi-correct first of surfshading and dvips driver.
	However, it works only after converting the ps to pdf :-( 
	The backwards conversion pdf->ps fails with limitcheck as before.

2009-04-02 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- re-enabled error bars and fixed bug
	- fixed newly introduced optimization of the binary output sub-package: it
	lead to an infinite loop :-(

2009-04-01 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- disabled error bars temporarily - one of my latest changes caused
	problems.
	- added 'cube/size [xyz]' for the cube markers
	- fixed bug in cube and cube*
	- Changed semantics of 'view'. It is now 'view={<azimuth>}{<elevation>}' 
	as in matlab.

2009-03-31 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved 3D plot tick label alignment issue

2009-03-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- found bug in error bar implementation - but I don't know where it comes
	from yet.

2009-03-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented expression plotting features inside of 'plot table' for the
	plot from structure method as well.

2009-03-26 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added (first draft with) support for expressions in 'plot table', for example
	\addplot table[x expr={\coordindex},y expr={\thisrow{std-L2} * \thisrow{maxlevel}}] {regtable};

2009-03-25 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added support for \coordindex inside of marker streams (interesting for
	scatter plots).

2009-03-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed the new placement of ticks such that is also works for 2D plots.
	It will also work for reversed axes. alignment is still not functional.

2009-03-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented proper placement for 3D axis tick positions.
	Alignment is prepared, but not functional yet.

2009-03-21 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added some internal methods to distinguish foreground and background in
	3D axes - required for a better placement of ticks and for the axis labels
	anyway.
	- Added image externalization for some expensive examples to improve manual 
	compilation speed. 

2009-03-20 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- renamed the 'z buffer=sort coordinates' choice introduced yesterday to
	'z buffer=sort'. I'll take care that it yields useful results.
	- fixed bug in the new option processing - some /tikz options were
	important during \addplot, but since the new strategie silently ignores
	/tikz options, I needed to add exceptions.
	- added implementation for z buffer=sort and mesh plots
	- allowed 3D line plots + mesh handler
	- optimized new option processing
	- changed default shader to faceted

2009-03-19 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added \pgfplotsarraysort
	- added |z buffer=sort coordinates| for use with scatter plots (not very useful for
	any other plot type yet)

2009-03-17 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- the point meta now always uses floating point routines internally; the
	case distinctions have been eliminated.
	- added keys 'point meta rel=axis wide|per plot' and 'point meta min' and
	'point meta max'.
	- added 'create col/' search path to table package.

2009-03-16 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added "cube" and "cube*" markers for 3D axes.
	- added 'unique' row predicate which suppresses multiple occurances of the
	same key in one designated column.

2009-03-13 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- introduced to use rows=cols=sqrt(N) if neither rows nor cols is provided
	in a mesh plot.

2009-03-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved 'view' processing for 3D axes.

2009-03-06 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed decoding bug of interp shader: now, acroread is able to read it!

2009-03-05 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- provided several 3D examples in the manual and fixed corresponding bugs
	in parameterized 3D plots.

2009-03-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- found and fixed encoding bugs in binary conversion. The surface lib now
	produces visually correct results - although acroread is still complaining
	and doesn't show anything :-(

2009-03-03 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- wrote further basic level table access commands.
	- surf shading now understands the colormap. Fixed bugs in mapping of
	dimen registers
	- startet primitive heuristics for z buffering of mesh/surf plots in the
	|mesh/z buffer| key.
	- added fast prepend list

2009-02-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- first semi functional version with bilinear interpolation shading (gouraud)

2009-02-26 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added public methods for access to table elements [untested and undocumented
	so far].
	- added pgfplotslistset [untested]
	- worked on binary encoding for signed integers

2009-02-24 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed enlarge z limits functionality (was broken)
	- provided 3D examples in reference manual.
	- improved alignment of 3D tick labels slightly
	- changed semantics of enlarge limits=auto for 3D plots

2009-02-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- The draw,fill bug introduced in the latest changes of 2009-02-20 appears
	to be fixed now. Nevertheless, I'll need to revise those changes.
	- the \label bug which also occured in this change is now fixed as well
	- fixed manual typo

	- implemented functionality 'mesh/ordering' and 'mesh/flat mode={corner,mean}|.
	- plot[mesh] works now also for 1D case.

2009-02-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- The processing of draw options and behavior options still causes a lot
	of overhead- and even bugs. At least the manual compiles now.
	Maybe that wasn't my best idea...

2009-02-20 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- changed complete processing of 'draw options' and 'behavior options'.
	They are now the same, no special treatment is necessary.

2009-02-19 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented first functional mesh - and surface plots (the latter with
	flag shading). 
	The user interface is lacking, however. And, of course, there will never
	be a real renderer - but it looks really good (up to the bugs)!

2009-02-17 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- provided some more code documentation
	- improved axis vector initialization for 3D plots
	- provided low-level interface commands and a corresponding section in the
	manual.
	- implemented tick label positioning for 3D axes. It works up to orthogonal special
	cases.

2009-02-16 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Released version 1.2.2 (bugfix release for CTAN)

2009-02-16 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- fixed overlay bug in conjunction with pgf 2.00 and legends

2009-02-14 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved compatibility with french babel settings: the manual compiles
	now even with special chars activated. Added section in FAQ

2009-02-13 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug in color map key.
	- introduced scaling section in manual
	- documented 'only marks'
	- colormap now accepts 'rgb255'
	- added more colormap styles.
	- added 'mark=text' which draws arbitrary TeX content as plot marks 

2009-02-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Released version 1.2.1 (bugfix release for samples key)

2009-02-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed nasty bug: the 'samples' key did not work! One needed to provide a
	domain as well...

2009-02-11 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug with axis [xy] line*=none

2009-02-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved sanity checking for 'scatter src'.

2009-02-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved low level lists: \pgfplotslistforeachungrouped can now be
	nested.
	- fixed bug in \pgfplotstablecopy
	- added \pgfplotstablevertcat

2009-02-07 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added algorithm for automatic scaling of 3D plots (when used with the
	view option). 

2009-02-05 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added 'plot graphics' feature.

2009-02-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Released version 1.2

2009-02-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved sanity checking in table package.
	- fixed max/min implementation for fpu

2009-02-03 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- patched key paths for plot file and plot table. One could not provide
	options with key path /pgfplots. This will need a little bit more
	attention later-on, see todo.txt.

2009-02-01 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- removed missing character warnings
	- fixed bug with domain processing for plot gnuplot.
	- fixed bug in FPU : fpu+pgf 2.00 is problematic with unary minus signs

2009-01-29 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- provided backwards compatibility for the domain and |samples at| key:
	the tikz variants are used by default now.

2009-01-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- manual improvements: fixed several typos in the manual; improved section
	about alignment and section about upgrade remarks.
	- manual improvements: replace a lot of gnuplot examples with 'plot
	expression' commands.
	- fixed the broken |axis equal| feature - it collided with the tickmin/max
	processing. The tickmin/max is now processed somewhat different
	- removed (some of the) 'no pt in nullfont' log warnings
	- now, every input file will be protocolled to the log file (only).

2009-01-24 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- re-implemented |domain|, |samples| and |samples at| keys. They are now
	independ of the |/tikz/| variants - and provide the complete data range of
	pgfplots.
	- fixed missing \endgroup in plot gnuplot (in the case that -shell-escape
	was not available)
	- fixed small bug with empty-plot-special case and tickmin/max resetting

2009-01-21 Pascal Wolkotte <wolkottept@users.sourceforge.net>

	- implemented '[x|y]tick[min|max]' option

2009-01-20 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug: 'scatter/classes' couldn't be provided as behavior option.

2009-01-16 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved fault tolerance of |scatter/classes|.
	- fixed scoping bug with plot markers

2009-01-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented \pgfplotstablesave
	- \pgfplotstabletypeset and \pgfplotstabletypesetfile are now the same;
	the input format is autodetected.


2009-01-07 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented simple test for 'samples at' vs. 'domain' 
	- implemented 'table/create col/set list' style
	- implemented a method to create new tables from scratch
	- implemented some more postprocessing routines for table package

2009-01-06 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug in clickable lib: logarithmic scales in x axes have not been
	processed properly.
	- now, the logarithmic sampling won't be applied for parametric plot
	expressions. Furthermore, it has been optimized.
	- improved compatibility between FPU and fixed point library inside of
	pgfplots

2009-01-05 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- both, plot gnuplot and plot expression now sample their points
	logarithmically if the x (y) axis is logarithmic.

2009-01-03 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- the fpu is now used automatically for plot expression and for the table
	create col/expr feature. However, it will be disabled during the low-level
	drawing commands of pgfplots. I rewrote some of the internals to avoid
	problems with the low data range of tikz (for example during domain
	processing).

2008-12-31 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- improved FPU support

2008-12-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added backwards compatibility switches for my new PGF library FPU.

2008-12-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed some issues with stacked plots and skewed axes
	- fixed a lot of manual typos and mistakes, thanks to Jeremie Knuesel!
	- Greatly simplified notation for |plot expression|.
	- introduced |\addplot gnuplot| as alias for |\addplot function|.

2008-12-17 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added |create col/expr accum| style: a variant of |expr| which now
	allows simple accumulation of columns
	- added a |date type| style based on the pgf calendar package

2008-12-14 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- provided a further improvement for empty plot handling: the normal
	processing is now applied for empty plots, with special handling for the
	named start/end coordinates.
	- improved future compatibility with FPU: just in case it moves to a
	separate library, I will check for such a thing.

2008-12-07 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- there was a bug with minorgrids auto-deactivation which has been fixed.
	- fixed a 'plot function[domain=..]' bug introduced yesterday
	- floating point methods now don't use 'fp' for mantisse computations if
	the fixed point lib is used

2008-12-06 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- scatter will now assign a mark if none is set.
	- empty plot bug has been fixed.
	- using xmode in wrong context leads to error message.
	- xticklabel pos now accepts 'top' and 'bottom'
	- manual has more compact index: I removed the '/pgfplots/' and '/tikz/'
	collections. 
	- improved index formatting.
	- re-implemented plot expression's sampling method. The PGF \foreach
	statement does not allow sampling domains beyond PGF's native math parser,
	the new implementation does also support the 'fp' package (combinded with
	the associated PGF library).
	Efficiency is expected to be higher than the previous \foreach
	implementation.
	- Provided a specialized processing of the |domain| argument for plot
	function which avoids the pgf math parser. Now, plot function provides the
	full data range of gnuplot.


2008-12-05 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved sanity checking for plot coordinate syntax; empty lines in plot
	coordinates are now processed correctly.
	- added alias for 'sample' key. It can now be provided as argument to axis
	environments.
	- added |no markers| shortcut style.
	- Added documentation for interrupted plots (for example for
	discontinuities in plots)

2008-12-03 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- updated docs. 
	- Fixed bug when there are less legend entries than plots.
	- added 'forget plot' option (and 'every forget plot' style)
	- made '/pgfplots/domain' option a public key alias to '/tikz/domain'

2008-12-01 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed a remaining bug with 'axis equal'
	- fixed bug in pgfplots/tikz search path code

2008-11-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added keys 'axis equal' and 'axis equal image' to get the same length
	for each unit vector.

2008-11-28 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- optimiziation of \pgfmathfloattofixed yields 7% time savings for
	pgfplotstest. For plots with many points it will be even more.

2008-11-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added '/pgfplots/refstyle={label}' key.
	- added 'read completely' key.
	- fixed bug with error bars: some of the latest changes must have been
	during sleep.
	- eliminated 6 dimen registers.

2008-11-24 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- document bounding box modifications with 'overlay' option of pgf.
	The examples require the latest CVS version of pgf, because pgf 2.00 has a
	bug here (overlay and matrizes).

2008-11-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added 'scaled ticks=manual' feature. It allows complete control
	over the scaled tick algorithm and scaled tick label placement.
	- improved support for french language, i.e. for active ';' and ':'
	characters. The manual does not compile completely if switched to french,
	but it is not much.
	- updated pgfplotstable such that it can be adopted to more general tasks.
	As example, html file output has been added to the manual.

2008-11-22 Christian Feuersaenger <ludewich@users.sourceforge.net>
	
	- the clickable lib can now be used independently of pgfplots.

2008-11-21 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved compatibility between pgfplotstable and colortbl: \rowcolor
	and dec sep align (sci sep align) now works properly.
	- Added 'every col no <index>' style as alias for 'display columns/<index>'.
	- provided error message if \pgfplotstablerow is used in the wrong
	context.
	- improved pgfplots documentation.
	- improved pgfplotstable documentation
	- 'sci sep align' and 'dec sep align' now only enable math mode for their
	numbers, not for empty columns.

2008-11-18 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added error bar adjustments for 'ybar' style
	- fixed bug: error bars are now drawn after the main path

2008-11-11 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed missing code portion for scatter and log plots
	- added 'view' option which allows to specify pitch and yaw for definition
	  of a 3D viewport (definition of x,y and z unit vectors of PGF).

2008-11-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- documented default values of cycle lists.

2008-11-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- prepared more code for 3D-axis drawing. It is growing now and won't take 
	long for good-looking 3D figures.

2008-10-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- used 'y domain='<empty> as feature for \addplot3 (\x,\x,\x):
	this will sample from a line, not from a surface.

2008-10-29 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented user interface to manually place 2D/3D tick LABELS (docs
	missing).
	  The next step is to predefine them automatically for 3D plots.

2008-10-28 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- renamed 'scatter plot' keys to 'scatter'
	- improved scatter plot user interface (not yet documented in parts)
	- implemented input methods for scatter coordinates (not yet documented)
	- worked on 3D axis generation.

2008-10-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Implemented colormaps.
	- Implemented scatter plots.

2008-10-25 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed a bug introduced in latest changes: 'tick align' produced wrongly
	positioned tick labels.


2008-10-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed a bug related to auto-tick placement and special cases of the
	scaling transformation.
	- Documented the new freedom in axis unit vector placement, reversed and
	skewed axes.
	- Introduced optimization for orthogonal axes.

2008-10-21 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added 'copy' and 'sqrt' features to table package.


2008-10-20 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Revised all new routines such that the 2D framework is running again.
	  All 2D tests appear to be ok.
	  The 3D stuff is neither documented nor ready, although early things
	  work. In the moment, it is only slowing things down, see todo.
	- Updated clickable lib to work with the new framework.
	- Removed remaining plain TeX '\loop' commands

2008-10-14 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Restored state of 2008-09-25 because something did not work and I don't
	have a stable version yet.
	- Updated compatiblity for pgf 2.0: inserted 'min exponent for 1000 sep'
	into compatibility files

2008-10-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented input routines for 3D plots using \addplot3:
		- coordinates,
		- gnuplot,
		- file,
		- table,
		- expression.
	- updated coordinate streaming methods to work with 3D data.
	  I also cleaned and optimized the 2D code.
	  -> stacked plots and error bars do not reflect this yet!
	- added 'plot function[<further behavior options>]' which are merged
	together with those after 'plot[<behavior options>]'

2008-10-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented first running 3D axis with orthogonal projection.
	  Most features work, especially tick placement, grid lines, tick label
	  placement. Some detail decisions of how to things look pretty have to
	  be done and realized. Scaling does not work yet and there are still
	  plenty of open problems. The user interface for setting views is crual.

2008-10-03 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug related to 'current axis' and origin anchors which occured
	  if axis limits have been restricted manually and axis descriptions
	  employed origin anchors.
	- continued the change to logical coordinates.

2008-10-01 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- changed internals to use logical coordinates consistently.
	- Added feature 'x={(10pt,-3pt)}, y=-1pt'; allowing
		- skewed axes,
		- reversed axes,
		- rotated axes,
	  as preparation for 3d plots.

2008-09-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- optimized number processing and log computations. Logs are now a factor
	of 3.8 faster.

2008-09-25 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Provided options to manually configure the tick scaling algorithm:
	either 1/10^<exponent> or 1/<real>  can be configured.
	- Added check for PGF 2.00 availability

2008-09-23 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Placed all drawing commands for plots and markers into separate scopes
	to end the effect of 'fill opacity' and 'dotted' styles.
	FIXME: check whether this affects any named nodes and such!

2008-09-21 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Improved compatibility with figure-environments. I had to turn
	"hidden=false" to fix this incompatiblity. I hope this does not produce
	visible artefacts... needs to be checked.

2008-09-17 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added 'include outfiles' option to table package, together with 
	'force remake'

2008-09-16 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed spacing bug in table package.
	- outfile and debug feature of table package now produce proper newlines.

2008-09-11 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added error messages if the table typeset features rely on LaTeX
	packages (array,booktabs) which have not yet been loaded.

2008-09-03 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added 'clear infinite' postprocessor to table package.

2008-09-02 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- re-implemented minimum and maximum computation because the PGF math
	parser interface has been changed. The changes are backwards compatible
	now.
	- fixed a bug in logarithm computation.
	- fixed some bugs related to the pgfplotsclickable library

2008-09-01 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Provided sanity checking for gradient computation in table package:
	division by zero now leads to empty cells.

2008-08-22 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added pgfplotsclickable library which displays point coordinates when
	clicking into the plot region (acrobat reader only; relies on acrotex
	bundle)

2008-08-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Release 1.1

2008-08-03 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added a library for abstract types of input coordinates (for example
	dates).

2008-08-02 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- change 'every axis grid' default style to 'thin,black!25'. This is less
	intrusive than 'help lines'.
	- fixed small bug in tick routines: they did not account for tikz drawing
	modes so 'draw=none' was ignored.
	- fixed context test cases
	- Improved manual

2008-08-01 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added several aliases for style keys. Something like 'x tick label
	style' always requires manual lookups while 'xticklabel style' is at least
	consistent with the 'xticklabel' key.

2008-07-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added environment 'pgfplotsinterruptdatabb'
	- fixed bug in |minor tick num|
	- fixed bug in alias feature of table package.

2008-07-29 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added |xtick pos| and |ytick pos| keys and |[xy]ticklabel pos|


2008-07-28 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed bug in 'plot table' optimization: did not allow for 'alias'ed
	columns.

2008-07-26 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved manual
	- provided better default key-paths such that '/pgfplots' can be omitted
	in many places.
	- Added \label / \ref support. Now, single plots can be referenced and
	\ref{label} inserts the associated legend image.

2008-07-25 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- markers are now drawn separately, after the clipped range. Instead of
	clipping their *paths*, their positions are clipped: a marker is either
	drawn completely or not at all.
	- The option 'clip marker paths' can be used for backwards compatibility
	- added |axis on top| key for area plots: in this case, axis descriptions
	are drawn on top of plot graphics.

2008-07-24 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Now, plot table{<file>} has linear runtime.
	- implemented fast low-level lists also for errorbars.

2008-07-18 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- I worked on the coordinate lists and finally got linear runtime.
	In fact, the idea of Till turned out to be the most effective one (although 
	it is only preasymtotically linear).
	- This makes the aftergroup-stack variable unnecessary. 
	- Some aspects are missing,	but I hope I can fix them soon.

2008-07-16 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- replaced tikz-drawing commands for plots with basic layer commands.
	Gain: about 12% faster than before!
	- added |use aftergroup stack as fast list| to allow O(N) time for large scale plot
	commands, given appropriate safe stack parameters of TeX.
	 

2008-07-15 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented support for axis limits of order up to 1.0e+-2147483644

2008-07-14 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added support to simplify access the previous row during create table column
	statements. Added one more numeric column creation style.
	- added 'exp sep align' and improved 'dec sep align'.

2008-07-12 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- modified axis label placement for 'axis [xy] line' variations.
	  I think it's ok now...
	- documented how to get multiple y axis
	- modified log plot tick generation algorithm, I forget something
	yesterday.

2008-07-11 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed log plot tick generation if the axis range is extremely small.

2008-07-09 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- moved a lot of directories and files around to better match the TeX
	directory structure (TDS)
	- used 'every mark' style for mark options - allows to append style
	options.

2008-07-08 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added 'postproc cell content' feature to table package
	- added 'preproc cell content' feature to table package
	- fixed plot limit bugs arising in special situations

2008-07-07 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved several things in table package
	- partial limits are now supported, for example 'xmin=4' or 'ymax=15'
	- improved empty axis range handling
	- modified transformations to avoid 'number too large/small' errors
	- enlargelimits respects partial limits
	- evaluated 'every axis plot' and 'every axis plot no <number>' in
	\addplot commands, allowing not only style options but also behavior
	options.


2008-07-04 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- implemented title, xlabel and ylabel as direct keys in pgf, allowing to
	add suffixes or prefixes to already assigned values.

2008-07-03 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added default styles for non-boxed axis lines. This is more or less
	experimental up to now and may still change.

2008-07-02 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed small issues in pgfplotstable manual
	- eliminated one dimen register and one count register

2008-07-01 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added semicolon to gnuplot invocation to fix the strange behavior of
	windows gnuplot.

2008-06-30 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- solved the problem of arrow heads and different styles for axis *lines*.
	Not quite satisfactory, because one needs to choose between closed paths
	and clean edges on the one hand and separate arrow heads or styles on the
	other hand. See the documentation for details.

2008-06-29 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- wrote some styles for the 'create col' framework, namely to compute
	piecewise gradients and quotients from one row to the next.

2008-06-28 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Wrote a \pgfplotstablecreatecol command to generate new columns in a
	quite general fashion.

2008-06-27 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- renamed the last change from 'column/{[index]5}/.style' to
	'display columns/5/.style' because it was not consistent.
	- implemented code to balance rows in typeset table routines.
	The first column is the measure, all other ones will be forced to
	match its row count.
	- documented new features.
	- added |hide x axis| and |hide y axis|.
	- added |enlarge x limits| and |enlarge y limits|.
	- Added key |legend entries|.

2008-06-26 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added column/{[index]5}/.style and 'column indizes/5/.style'
	- added 'select equal part entry of' style

2008-06-25 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added warning when loading tables '#1.tex' instead of '#1'.

2008-06-24 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved error recovery: empty plots are now discarded silently
	- added column 'alias' feature for tables
	- optimized code for grid line, tick line and tick label generation and
	replaced tikz commands by basic layer commands. 
	pgfplots is now 36% faster!
	- changed drawing sequence of axis lines and tick/grid lines. Now, tick
	lines are no longer drawn on top of axis lines.
	- introduced aliases 'axis y line=middle' and 'axis x line=center'
	- added named node 'current axis' which provides anchors 'origin', 
	'above origin', 'left of origin', 'right of origin' and 'below origin'
	-> this allows improvements of the non-boxed axis variants
	- added those anchors also to the normal anchors.
	- added styles 'every inner [xy] axis line'
	- added styles 'every outer [xy] axis line' [untested]
	- added command keys 'inner axis line style', 'outer axis line style' and
	'axis line style'

2008-06-18 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- improved ConTeXt compatibility

2008-06-17 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed incompatibility between 'plot function' and german active "
	character

2008-06-11 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Released version 1.0

2008-06-11 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added boolean |row predicate| to select table entries.
	- added macro |\coordindex| inside of \addplot to allow index based
	  coordinate filters.
	- added style keys |/pgfplots/skip coords between index| and
	  |/pgfplots/table/skip rows between index|
	- added style |dec sep align| for table typesetting.

2008-06-10 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Fixed several warnings in manual
	- reimplemented |minor tick num| as style which sets the [xy] variants

2008-06-09 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Replaced |xfilter| and |yfilter| by code keys |x filter/.code={...}| and
	|y filter|. Backwards compatibility is checked. Added docs.

2008-06-09 Pascal Wolkotte <wolkottept@users.sourceforge.net>

	- Added |minor x tick num| and |minor y tick num| option
	- Adjusted section title format in documentation
	- Filtered x and y tick's if axis x/y line is middle or center

2008-06-07 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Wrote more documentation, added |every axis plot post| style.
	- Added |col sep=<space|comma|colon|semicolon|braces>| option for table
	input.

2008-06-06 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added |minor tick num| option

2008-06-05 Pascal Wolkotte <wolkottept@users.sourceforge.net>

	- Added options to choose the drawing of the axis lines
	- Added options to include a discontinuity decoration on the axis lines
	- Added options to align ticks with the axis lines

2008-06-03 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- Added options |before end axis/.code| and |after end axis/.code| and
	|extra description/.code|.

2008-06-02 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- I have replaced all /tikz/ options with /pgfplots/ ones. The
	documentation is updated to reflect this change. 
	Backwardscompatibility with \tikzstyle and the old /tikz/every... styles
	is provided. 

2008-05-31 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added \pgfnumtabletypeset feature. It is quite sophisticated by now and
	allows to typeset (selected parts of) numeric tables; rounds each number
	to desired accuracy and provides number format styles.

2008-05-26 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added special values 'xtick=data' and 'ytick=data' to collect the first plot's
	coordinates as tick data.

2008-05-24 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- First version of manual with pgfmanual styles is ready. It is not quite
	final, but should be enough to communicate with Pascal.
	- fixed plot expression to work properly.

2008-05-21 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added useful styles for all bar options.

2008-05-20 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- fixed some issues with stacked plots
	- added public macros \plotnum and \numplots inside of an axis
	- added options '[xy] tick label as interval=true|false'
	- added support for 'ybar interval' plot handler (which I added to PGF
	recently).

2008-05-19 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added \closedcycle command for use after \addplot. It connects the
	current plot with the x-axis to provide fillable plots easily.
	- added named coordinates 'current plot begin' and 'current plot end'

2008-05-18 Christian Feuersaenger <ludewich@users.sourceforge.net>

	- added support for stacked plots:
		- stack plots=x|y|false
		- reverse stacked plots=true|false
		- stack dir=plus|minus
	- rewrote some internals

2008-05-12 Christian Feuersaenger <ludewich@users.sourceforge.net>
	- added 'current plot style' key to \addplot
	- Added error bar support with fixed absolute/relative errors or explicit
	  absolute/relative errors for each coordinate.
	- added plot types for piecewise constant plots
	- added plot types 'ybar' and 'xbar' with option '/pgf/bar width'
	- added option 'legend image code'
	- fixed data scaling trafo: contained possiblity for cancellation of significant
	  digits
	- added limited support for \addlegendentry[]{}
	- removed clipping region for tick line placement
	- added options
	  'every axis plot no 1,2,3,4,...'
	  'every [xy] tick'
	  'every minor [xy] tick'
	  'every major [xy] tick'
	  and the same for s/tick/grid/
	  and the corresponding '[xy] tick style', 'minor [xy] tick style' ...

2008-04-23 Christian Feuersaenger <ludewich@users.sourceforge.net>
	Released version 0.98 beta
	Changes since version 0.92.4:
	- enlargelimits now works properly for logarithmic axes
	- added support for plot function (gnuplot interface)
	- added extra ticks which are drawn on top of the normal ticks
	- providing x limits will now automatically clip y and vice-versa
	- added option 'log identify minor tick positions'
	- added option 'log plot exponent style'
	- added option 'log number format code' and 'log base 10 number format code'
	- improved automatic tick placement for log plots
	   they are now scale dependend as for linear plots.
	- added 'at' option
	- cycle list and \legend now accept comma separated lists
	- added support for plot expression
	- re-implemented the internal plot representation as pgf node. This improves
	  the PGF integration:
		- you can access various axis anchor from outside,
		- you can easily clip parts of the axis out of the bounding box (useful for
		  alignment),
		- you can access named axis descriptions (legends, titles, labels,...)

	- the complete floating point number support has been integrated into PGF 2.0.
	  That means: there are options 
	   /pgf/number format/sci
	   /pgf/number format/fixed
	   /pgf/number format/....
	   BUT
	   numbers are now printed with
	   \pgfmathprintnumber
	   NOT 
	   \prettyprintnumber   [ INCOMPATIBLE ]

	- added option 'scaled ticks'
	  and associated styles 
		'every x tick scale label'
		'every y tick scale label'
	  and options
		'x tick scale label style'
		'y tick scale label style'
	  and parameters
		'scale ticks [below,above] exponent'

	- legends have been improved (was \edef, is now better)

	- Any styles can now contain axis options, for example
		\tikzstyle{every axis legend}+=[legend columns=2]
	- added option "cycle list"
	- added option "cycle list name"
	- added '\addplot plot file {filename}'
	- added '\addplot plot table[x=colnameA,y=colnameB] {filename}'
	  and   '\addplot plot table[xindex=numberA,yindex=numberB] {filename}'
	  and   '\addplot plot table[...] from {\macroname}' in conjunction with
	  '\numtableread{FILE} to \macroname'

	- eliminated several scopes such that node names for labels, titles and legends
	  will be known outside of an axis,
	- added
		\tikzstyle{every semilogx axis}=[]
		\tikzstyle{every semilogy axis}=[]
		\tikzstyle{every loglog axis}=[]
		\tikzstyle{every linear axis}=[]
	- added option 'legend style'
	- added option 'label style'
	  added option 'x label style'
	  added option 'y label style'
	  added option 'grid style'
	  added option 'tick style'
	  and the same for all 'every ...' styles.
	  added option 'style=' option


2008-02-01 Christian Feuersaenger <ludewich@users.sourceforge.net>
	Released version 0.92.4
	Changes since version 0.92:
	** UPGRADE INCOMPATIBILITIES **
	- Warning: I have greatly improved the legend placement.
	  If you have overwritten 
		\tikzstyle{every axis legend}
	  you will need to update the legend!
	- renamed 'manual.pdf' to 'pgfplots.pdf' to allow 
		'texdoc pgfplots'
	- any \axispath commands need to use the 'axis cs' coordinate system.

	Improvements:
	- introduced a data scale transformation:
	  know, pgfplots is no longer restricted to numbers within 
	  TeX's limited precision.
	  It can produce plots with numbers of order O(10^10) or O(10^-10) (now even for non-logarithmic plots)
	- fixed a bug which did not allow scientific notation for normal plots,
	- improved default tick placement for normal plots,
	- enlargelimits option is now relative and has a better user interface,
	- legends are now TikZ matrizes, which fixes some bugs and improves their
	  flexibility.
	- Added the 'legend columns' option.
	- Added the 'legend plot pos' option.
	- Added the 'hide axis' option
	- Added the 'scale only axis' option
	- Added the 'xticklabels=LIST' and 'yticklabels=LIST' options
	- Added anchors to axes to allow horizontal/vertical alignment
	- rounded tick labels to \prettyprintnumberprecision digits
	- Added 'grid=major|minor|both|none' option for grid lines
	- Added '[xy]minorgrids',  '[xy]majorgrids' options and corresponding styles
	- Added '[xy]majorticks', 'ticks=major|minor|both|none' options ticks
