- Fixed bug that caused dependencies to be sorted by UUID, although
they are shown as IDs.
- Updated unit test to accomodate new comma-less formatting of
dependencies.
- New 'ids' command that returns a filtered set of task ID numbers, instead
of the actual tasks. For advanced pipeline use.
- Now supplements the command line with data read from standard input, which
allows commands like: echo 'add Pay the bills' | task