Apparently when specifying any doctest_optionflags, it's necessary to also indicate the defaults. Add ELLIPSIS to fix other failing tests.

Remove documentation about non-package data files that's no longer relevant without eggs. Fixes #1385.

Drop support for EOL Python 3.3

Add reference to Setuptools Developers team for clarity of maintenance and removed reference to Jason as maintainer.

Make minor fixes to release docs

Bump appveyor Python 3 to 3.6

Allow setting long_description_content_type externally

Feature/issue 1330

Update release process docs

Don't require network in tests

Stop testing Python 3.3 in Travis