- All tests (I hope) now properly remove completed.data on exit, which
should prevent certain non-deterministic tinderbox results caused by
residual data.
- Allows the 'projects' and 'tags' commands to be list all used
projects/tags, not just the ones used in current pending tasks.
Controlled by the 'list.all.projects' and 'list.all.tags' configuration
variables (thanks to Dirk Deimeke).
- Added unit tests.
- Updated man pages.