Mark todomvc-unit.launch as a favorite.
Tweak tessell builder when using a tessell working copy.
Refactor AppState to remove doneTodos.

Tessell's implicit dependency tracking of derived values is smart
enough to re-eval a "numberDone" property whenever the list or one
of the properties it touched changes.
Add ListProperty.filter to derive doneTodos.
Use binder onDoubleClick/onKeyDown/onClick methods.
Also stop editing on escape.
Remove unneeded line.
Update for static-ified Binder methods.
Tick to tessell 2.11.11.
Eclipse cruft.
Add a test for doneTodos firing a change.