Merge pull request understandable-machine-intelligence-lab#107 from u…

…nderstandable-machine-intelligence-lab/infidelity_72

Infidelity (Issue 72) & Road (Issue 76)

post-merge fixes: impr. code coverage, formatting, docstrings, tytori…

…als update, pytests fixes, added deprecation warnings, impr. warnings in general!

Fixed PixelFlipping metric only flips first color channel understanda…

…ble-machine-intelligence-lab#75

README.md updated

tagged for release