Obj-C implementation of Ben Dietzkis's https://medium.com/ios-os-x-development/effervescent-calayer-transfigurations-on-ios-c5e78781db17
Obj-C implementation of Ben Dietzkis's https://medium.com/ios-os-x-development/effervescent-calayer-transfigurations-on-ios-c5e78781db17