Merge pull request QData#569 from QData/fix-apidoc

fix read-the-doc installation issue  / clean up and add new docstrings for recently added classes/packages

Merge pull request QData#508 from QData/example_bug_fix

bug fix for codes in example folder

Update conf.py

Merge pull request QData#496 from QData/readthedoc-fix

Update requirements.txt pillow version...

API-rework

Release for v0.2.15

Merge pull request QData#310 from ArshdeepSekhon/master

changes to eval cli : option to eval on entire dataset

v0.2.12