To add support for a new VCS

So, you want to extend Versioneer to support your favorite version control system? Great! Here's what to do:

1: mkdir src/NEW-VCS/
2: create work-alikes for everything in src/git/
3: add NEW-VCS to the loop in setup.py generate_versioneer()
4: add clauses for NEW-VCS to src/get_versions.py, for both the from-keywords and from-vcs sections
5: add test/test_NEWVCS.py, copying the general style of test_git.py but using NEWVCS instead of git.
6: add a line to .travis.yml to execute your test_NEWVCS.py upon checkins

Then file a pull request!

To make a release

(if setup.py doesn't acknowledge bdist_wheel, and the "wheel" package is installed, look for stale versions of setuptools and delete them)