4.0.0 (2019-02-18)

Features

• ios: Make iOS app Scheme configurable with a preference (#307) (d52d37e), closes #282
• ios: Remove WKSuspendInBackground preference (#309) (73b6659), closes #286

BREAKING CHANGES

• ios: Remove the WKSuspendInBackground preference, so app relying on that prefere will
  not behave as expected