fix for BaseAlembicCommand in which 'app' is used
add module docstring
Merge pull request #35 from item4/docs

Trivial: add module docstring
fix wrong import order
Merge pull request #36 from item4/import-order

fix wrong import order
Merge pull request #37 from sjw0687/fix_setup_for_app

Fix error occurred at adding a new migration script
immigration
documentation
additional documentation and test
test loader()
app-> flask_app, added celery_app
flake8
flake8
Documentation, and change name of variables 'p' to 'property_'
unify docstring
loader test enabled and change 'cliche load' to 'cliche sync'
use Info field lists to describe function `select_by_relation`
Remove unused class and change argument name from 'json' to 'return_json'
delete tests/celery.py
change file name WorkAuthor.py -> workauthor.py