pst-bar.tex -------------------
v 0.93   2022/09/10
   fix for catcode setting in the tex file (hv)

v 0.92   2008/11/26
   some more improvements to the code (hv)

v 0.91   2008/04/16
   Bar labels now set within parboxes to keep them from becoming too
   long or overlapping with neighboring labels. New keys
   ``labelalign'' and ``labelwidth'' added to control this behavior.
   WARNING: These new features are not yet fully tested!

v 0.9    2005/10/07
   Code now uses pst-xkey instead of pst-keyval for managing keys.

v 0.8    2005/02/13
   Adjusted the code for stacked bar styles so the Postscript code argument to
   \psbarscale so the Postscript code is only applied to the bottom bar.

v 0.7a   2004/09/24
   Removed some debugging code that was accidentally left in the last release.
   The removed code was harmless, but caused confusion for some users.

v 0.7    2004/09/15
   Made a minor change to \psbarscale so its functionality would be more
   closely analogous to the \pstScale command from the pstricks-add pacakge.
   Improved documentation. Set default barstyle to list of all available
   barstyles. First release to CTAN.

v 0.6    2004/09/09
   Added orientation parameter and horizontal bar-drawing capability. Removed
   erroneous correction factor for linewidth from stacked bar chart.

v 0.5    2004/09/02
   Added header parameter for \readpsbardata. Improved handling of headers in
   the data file -- spaces may now be included in a header item, though commas
   still may not.

v 0.4    2004/08/29
   Added "block" chartstyle. Updated \readpsbardata to use .csv for both
   header and data. Introduced \psbarscale command. First release to pstricks
   mailing list, 2004/09/01.

v 0.3    2004/08/26
   Added command \readpsbardata to read data for bar chart directly from a
   .csv file with the first row containing the column labels.

v 0.2a   2004/08/23
   Changed colsep parameter name to barcolsep to avoid clash with psmatrix.

v 0.2    2004/08/22
   Added stacked bar chart, chartstyle parameter, and introduced pst-bar.pro
   prologue with transpose command.

v 0.1    2004/08/21
   Clustered bar chart.