revert podspec source url to upstream
bump the version due to changing repo structure
Tests now use an actual UIWindow to exercise more autolayout machinery.

Added a test to specify behavior when the constraint passed to removeConstraintsFromApplicableSuperview: applies only to subviews, not to the receiver itself or any of its superviews.
Added a test exercising removal from an indirect superview when the constraint applies to that superview.
Fix misleading assert message when unable to find a common superview for a view
Merge remote-tracking branch 'origin/patch-1'