- fix 181 - add support for projects built under setuptools
declarative config by way of the
setuptools.finalize_distribution_options hook in Setuptools 42.
- fix 305 - ensure the git file finder closes file descriptors even
when errors happen
- fix 381 - clean out env vars from the git hook system to ensure
correct function from within
- modernize docs wrt importlib.metadata
*edited*
- use \--first-parent for git describe