4.5.7

Add

• Custom camera supports tap-to-record mode. #944 @tsinis
• Custom camera supports wide-angle lenses on iOS 13 and above. #948 @tsinis
• Custom camera allows adding a custom overlay view. #951 @tsinis
• Video editing controller adds a callback block for canceling edits. #953 @tsinis
• Added ZLImagePreviewControllerDelegate protocol to receive event callbacks in ZLImagePreviewController.