More support for using the library from more than one activity
We need to pause an Activity in the following way:
1) Activity.onPause()2) View.onPause()3) Library.onPause()
otherwise sometimes there are artifacts when pausing!
Merge branch 'empty-matrix-effects-in-the-center' into modern-empty-matrix-effects-in-the-center
Fix several more apps for the 'center-of-matrix-effects-in-screen-center' change.