Rewrite test_version

[pmayd]

Right now test_version is a dummy test that does more harm than it's helpful. I want to rewrite the test so it compares the version in init, that defines the pystatis.version attribute, with the version stated in the pyproject.toml file. This would assure that we'll never ever forget to updated both again (should even be a pre commit hook)

[bergnerjonas]

Fixed in version 0.2.0 #50