Added Features/Bug Fixes
- Fix a bug to set the font of the active cursor correctly when adding
or deleting points.
- Fix a bug for ``prtgif'' so that it works correctly when the page
style is not portrait.
- Every object can have attributes, and attribute's name field can be empty.
- Add copy and paste operations. Support copy and paste between multiple
tgifs. Thanks to Kouichi Matsuda@NEC in Japan for his contribution to
William Chia-Wei Cheng (email@example.com)