DateTime::Format: Drop support for RFC3339 format because it is not clear that it's really necessary. Add synopsis.
Namespace reorganization: Rename App::BusyBird* into BusyBird::* and Test::BusyBird* into BusyBird::Test*. 'App' is not used in many Web-based application distributions in CPAN, so BusyBird won't need it either.
Timeline: unacked_counts selector resource: returns a clone of unacked_counts when the exp_unacked_counts is empty.
Main, Timeline: Update POD for watch_unacked_counts API. It is pretty complicated...
t/Timeline.t: Add tests for watch_unacked_counts when negative levels are involved.
xt/Input_Twitter.net.t: fix the test. Usage of BusyBird::Log has been changed.
t/Timeline.t: refactor some functions to t/lib/BusyBird/Test/Timeline_Util.pm.
Timeline: sanitization of watch_spec is moved from resource provider to watch_unacked_counts() method. it is not good to sanitize and modify the condition input inside resource provider.
t/Main.t: write tests. still in progress.