Custom ConfigDict for finer key error message
Make import_all_modules() to return set of names
typo
Integrated & unified configuration loader
celery worker now can be run with -A cliche
Docs about Celery
typo
Missing command in docstring
Merge pull request #25 from dahlia/config

Unified configuration loader & Celery settings
change to click library
remove manager from __all__
make -c option decorator and auto run config
add application context(app.context()) to get current_app in get_database_engine()
remove __main__ entry because can't test it
CLI test (It has some problem. see PR to detail.)
add install_requires
change command option order
change command option order
split test and remove some test
remove