* Fix: Allow hashing of metrics with lists in their state
* Add test case and modify semantics of Metric __hash__ in order to be compatible with structural equality checks
* Fix pep8 style issue
Co-authored-by: Jirka Borovec <Borda@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>