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