- add `--loc=surviving|insertions|deletions` (50)
+ modifies meaning of `loc` (default: `surviving` unless `--cost` is specified)
+ make `insertions`/`deletions` find all historical file names (not just those in current tree)
* also warn that more things may need to be added to `--excl`
+ if `--cost` is specified, alters default of (unspecified) `loc`
- add & update tests
- fix logging
- major framework upgrade
+ drop explicit py3.2, 3.3, 3.4 support (not tested)
+ add & test py3.9
+ migrate to `setuptools`/`setup.cfg`
+ upgrade & fix snap build
+ add pre-commit hooks
+ automate linting comments
- misc documentation updates