Implement unit tests for Point#isColinear()
Implement unit tests for Point#isOrthogonal()
Fix issues in Point#isOrthogonal() and Point#isColinear()
Fix unit test for strokeBounds and add new one for corners with miter limit.
Fix issue with strokeBounds affecting corners with miter limit and both handles set.
Rename Path. _addSquareJoin() to more suitable _addBevelJoin()