- Many tests referred to 'synch_key.data', which is not the correct
name. It should be 'synch.key'. This has no effect on the number
of passing tests though.
- Corrected all unit tests that used the old syntax "task done 1" to
use the new syntax "task 1 done". Similarly, "task 1 ..." is now
"task 1 modify ...".
- 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
