Add filtering descendant
Filter include descendants too, but GUI should not show in toplevel
Add filter descendants
Add another field for the list of dependencies.
Make the repetition rule depend on the root rule so we can have recursive grammars.
First attempt at getting dependents.
Fix new string.
Fix equality comparison for dependents.
Add a test mixing both dependents and subtasks.
Warning fix.
Variadic templates FTW
Added an extra field for attaching files to tasks.
Fix syntax for displaying attachments as a string.
Merge pull request #290 from lowjoel/dependency-parsing

Add dependency parsing
Implement adding and removing attachments via the attach and detach commands.
Fix wrong test result.
Implement API for batch addition and deletion
Merge pull request #283 from evansb/clean-test

GetTask should include descendants too
Merge pull request #292 from lowjoel/attachment-parsing

Attachment parsing
Implement subtask