Owlmixin

:memo: Documentation release !!

For latest (not stable)
- [Documentation TOP](http://owlmixin.readthedocs.io/en/latest/?badge=latest)
- [API Reference](http://owlmixin.readthedocs.io/en/latest/api.html)

New features
- :new: Add O (and Or) classes :warning: This is a trial feature

Internal changes

:warning: If you already import a following file, please rename.
- :fire: Rename from dictutil.py to util.py (tests, too)

New features
- :new: Add `all`, `any`

Improvements
- :arrow_upper_right: Replace type hintings comments to docstring

New features
- :new: Add `sum`, `sum_by`
- :new: Add `concat`, and override a plus operator
- `TList(...) + TList(...)` is not return list but TList

New features

:new: Add `join` to TList

New features

:new: Add `reject` to TList and TDict