clean requirement.txt
first test case & update requirement.txt
begin to rewrite core.model to decouple flask-sqlalchemy and facade
update conf.py for docs; re-impl User model
re-impl Todo model
start to re-impl facade
re-impl: move_todo
re-impl facade::remove_todo
return todos in trash for clean_trash
re-impl  facade::raise_priority
re-impl facade done
move files from app2 to app
correct package name
only moveTodo is not tested
moveTodo is tested as well
Sun Apr 27 15:28:22 CST 2014
Sun Apr 27 15:52:20 CST 2014
it seems everything works again
we have to run migration script manually now
 update .travis.yml