0.9.3: Normalize strings and bump

Signed-off-by: Alexey Stepanov <penguinolog@gmail.com>

Typehints, metadata and prepare python 3.7

Bump to 0.9.2

Signed-off-by: Alexey Stepanov <penguinolog@gmail.com>

Version 0.9.1

* allow reverse operations (eg other <operation> self)

Version 0.9.0

* Python 3.3 support is ended. EOL is coming, test was run rarely.
* Move data from setup.cfg to __init__.py and setup.py

Fix no __init__ in wheel.

Version 0.8.2

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Fix no __init__ in wheel.

Version 0.8.2

Allow cythonize failure

Requirements.txt was missed

0.8.1

Requirements.txt

Cytonize binfield, if possible.

0.8.0

Wheels isnot platform-specific

0.7.6

Update setup.py from doctedsted get_simple_vars_from_src.
extract requirements

0.7.5

pyp3 on travis is too old