*Features/Bug Fixes:*
* Introduces [68](https://github.com/KnightConan/named_enum/pull/68):
* Restructure project with pyckage-cookiecutter
* Fix issue, that package is incompatible with python version bigger than 3.8.6, because the changed interface of function get_mixins in EnumMeta class in commit python/cpython5efb1a7diff-e5dd6e444e4e6c2cdeb8edf271d057f9da52f7b406dcd8b655dc396fb013bd03