prime31/GoKit — pull request #25 by notoes (2013-05-17 02:16:06+00:00)
Title: Catch null reference exception when removing tweens while quitting

Now that the instance isn't recreated while the app is quitting, users can get a crash by trying to remove tweens on app quit. This change protects against referencing the deleted instance.

I also changed it so the instance is disabled via the field not the property to be consistent with the rest of the class.