Add assertions to check for accidentally scheduling update methods.
Don't check if an CCNode has already been scheduled. This used to be needed for something but now causes issues with scheduling selectors.
Fixing some conflicting method errors for Xcode 5b4.
Fixed a scheduler pause bug and made the tests more robust.
Fix infinite loop issues with schedule: and scheduleOnce:.
Fixed an issue with [CCPhysicsBody applyImpulse:]
Merge branch 'develop-v3' of github:cocos2d/cocos2d-iphone into develop-v3