Changes:
- renamed 'halfcircle' marker to 'halfcircle*' and added 'halfcircle'.
- provided special case 'mark color=none' for the half-filled markers.
- added more predefined dashed and dotted line patterns for
black/white plots
- Imported spell checking results of Stefan Pinnow
- Dealed with typo in 'sci generic' number formatting style: it now
accepts 'mantissa' *and* 'mantisse'
- many more changes and bug fixes.
See share/texmf-dist/doc/generic/pgf/ChangeLog for the complete list.
