Enable compatibility with Python 3.6+

[BookLaugh]

Replace enum34 with enum-compat, so that in newer Python enum34 is not imported - since it's incompatible with a built-in one.

[BookLaugh]

@kowalski Hey, would you like me to update setup.py with new version information (1.2.1)? Is version stored elsewhere, or will that be enough?

[kowalski]

@BookLaugh this will be enough, I will try to rebuild later and upload

[kowalski]

@BookLaugh I've released this as https://pypi.org/project/serialization/1.2.2/

Also turns out I no longer have write access to this repository.
I moved the library homepage to: https://github.com/rumblefishdev/serialization

[BookLaugh]

Thank you!
It turns out you published version linux-x86_64 - it's packed with absolute path /usr/local/lib/python3.8/site-packages - would you mind packing it in a more system-agnostic way?

[kowalski]

My bad!
I uploaded https://pypi.org/manage/project/serialization/release/1.2.3/ as sdist.