Make a few cleanups:
- Remove python 2.7 stanza from setup.py
- Add requires on python >= 3.6 to setup.cfg so that pypi and pip
know about the requirement
- Remove obsolete sections from setup.cfg:
* Wheel is not needed for python 3 only repo
- Update classifiers
- Update requirements, no need for python_version anymore
Change-Id: Ibc9c3d9448dc204e7877a00a9970e1673fd2951e
While not strictly necessary for files containing only ASCII
characters, adding a line with "coding: utf-8" can guard against
future SyntaxError's in case someone inserts a Unicode literal.
This commit adds such lines to all .py files. The syntax used by this
commit works with Python (of course). It also works with Emacs, which
will recognize the special "-*-" marker and use the "coding" variable
to correctly decode the file, even in an environment where UTF-8 is
not the default file encoding.
Existing coding lines were normalized to match the new lines added.
Partial-bug: #1325193
Change-Id: I58bf93fea711fd25890356a397e594bd820c99e3
