started deviding ConstraintSystem into different parts
rename mvine method names
mvine_tests tests mvine module
Merge branch 'refactor_constraint_system'

Conflicts:
	src/skypyblue/constraint_system.py
	tests/helper_method_tests.py
	tests/mvine_tests.py
Merge branch 'master' of https://github.com/knub/skypyblue

Conflicts:
	tests/update_method_graph_tests.py