If the super class is not actually observing the key, the app will crash. Checking to see if
the super class responds to this selector doesn't solve this issue.

react-native-video github issue: https://github.com/react-native-community/react-native-video/issues/1515

Discussion about this particular problem: https://stackoverflow.com/questions/6574714/whats-wrong-with-this-observevalueforkeypathofobjectchangecontext-implement

Release/5.0.0

Update androidx

fix indent

Make more obvious the changes needed via using diff

fix typo

Make installation parts easier to link

handle racing conditions when props are setted on exoplayer

# Conflicts:
#	CHANGELOG.md

Release/4.4.3

[iOS] fix when controls & muted

Bugfix/android disablefocus audio

Fix memory leak on iOS when using `controls` (AVPlayerViewController)

Android 28, pre to androidx 

iOS KVO Crash Fix