Formatierung nach PEP8
Merge pull request #2 from sanitz/master

Formatierung nach PEP8
Merge branch 'master' into beispielloesungen

Conflicts:
	test/unit/book_test.py
	test/unit/counter_test.py
	test/unit/line_counter_test.py
	test/unit/munge_test.py
	test/unit/object_with_date_test.py
	test/unit/roman_converter_test.py
	test/unit/string_creator_test.py