Py2puml

What's Changed
* fix(compoundtypesplitter): handle class names with digits by lucsorel in https://github.com/lucsorel/py2puml/pull/36


**Full Changelog**: https://github.com/lucsorel/py2puml/compare/0.6.0...0.6.1

What's Changed
* Add minimal support fot abstract classes by jonykalavera in https://github.com/lucsorel/py2puml/pull/27

New Contributors
* jonykalavera made their first contribution in https://github.com/lucsorel/py2puml/pull/27

**Full Changelog**: https://github.com/lucsorel/py2puml/compare/0.5.4...0.6.0

**Full Changelog**: https://github.com/lucsorel/py2puml/compare/0.5.3...0.5.4

* parse constructors wrapped by decorators
* document composition relationship
* added a contribution guide and pylint as a dev dependency

What's Changed
* updated documentation: py2puml requires python 3.8+ by lucsorel in https://github.com/lucsorel/py2puml/pull/18


**Full Changelog**: https://github.com/lucsorel/py2puml/compare/0.5.1...0.5.2

- 0.5.0: handle instance attributes in class constructors, add code coverage of unit tests
- 0.5.1: prevent from parsing inherited constructors