- Fixed several tests that were broken, and generated diagnostic output,
but didn't fail in the traditional sense. This was found by looking
through the tinderbox data file.
- Added support for more varied durations when specifying recurring tasks,
such as '3 mths' or '24 hrs'.
- Fixed bug #417, which caused sorting on countdown fields to be wrong
(thanks to Michell Crane).
- Durations are now based on seconds, rather than days, and can accept/parse
negative durations.
