* due, threshold, and repeat string tags are now configurable
  See: todotxt-due-tag, todotxt-threshold-tag, todotxt-repetition-tag

* fixed a problem with highlighting of tasks
fixed email and copyright year
* major revision of search functions. Now search functions
  work in place and can hide irrelevant text; they have
  been renamed (search replaced by filter) to better 
  reflect the behaviour.

* the machinery for highlighting dated todos is now
  less "invasive". Todos are marked according to their
  status only if the todotxt-highlight-dated-todos is
  called

* revision to the font-locking

* added command to set priority C to a task

* sorting functions. You can now sort by project,
  tag, status
added status markup to the highlighted strings
- added plural form for repetitions
- fixed a bug related to repeating events not being
  recognized as such
(one way) integration with OSX Reminders App