chg: Renamed some variables to resolve some pep8 warnings @minor
chg: dev: Moved the base changelog reference for the tests.

Extracted the changelog used to compare to the test results for base
cases and moved it into its own file. This makes both the test and
the changelog easier to read. It also facilitates a standard way to
store other reference changelogs.
new: Support git-flow branching for a better changelog
Merge branch 'feature/git-flow-support' into develop