Cleanup Vec2.square, square_v2, and Vec2.get_square
Add TODOs to look into ** and math.pow more.
Add tests for get_norm, get_perp, and Vec2.length
Cleanup and test __getitem__, dot, and dot_v2
Cleanup and test Vec2's gets, sets, and rot_rads
Cleanup and add tests for Vec2 sub() functions
Add TODOs for remaining code that needs updating
Merge pull request #3 from olsoneric/adding_more_vec_tests3

Adding more vec tests3