schlamar/cov-core — pull request #6 by bukzor (2014-10-24 00:10:56+00:00)
Title: allow for cov_source=None

None is a legitimate and useful value of cov_source, which means use the default value of coveragepy.
This results in measuring coverage for everything or (more importantly) the configured run.source in coveragerc.

This supersedes #5 (I changed the branch name, for my own sanity)