python 2/3 compatible metaclass definition syntax
little insignificant tweaks and bugfixes
Merge branch 'ci'
typo fix
authors file sorted by number of commits
Merge pull request #28 from unaizalakain/ci

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Merge pull request #29 from unaizalakain/master

python 2/3 metaclass definition & little insignificant bugfixes
Merge pull request #30 from unaizalakain/authors

Authors file
Merge branch 'tests'
python 3 compatible class equality assertion in tests
make `python setup.py test` possible