- Updated the copyright notices to 2010, for the 1.9.0 release.
- All unit tests most now clean up a residual undo.data file, so the number of tests increased, but with no benefit.
- Prevented blank annotations from being added, and the description being echoed as though it were the annotation applied (thanks to Bruce Dillahunty). - Added bug.annotate.t unit test to prevent regression.
