v1.2.3

• Fixed APNS, FCM and ADM error response parse crashes. Error responses not
  listed in the documentation are returned as :unknown_error

v1.2.2

• Fixed APNS handling of notification expiration
• Added APNS support for collapse_id

v1.2.1

• FCM notifications can now handle time_to_live, collapse_key, restricted_package_name
  and dry_run keys

v1.2.0

• Support for APNS JWT configuration
• Bump kadabra dependency to v0.4.2

v1.1.6

• Relax gen_stage dependency to ~> 0.12
• Bump kadabra dependency to 0.3.7

v1.1.5

• Fix: relax httpoison dependency to allow 0.x or 1.0

v1.1.4

• Fix: :on_response callbacks spawned as supervised task instead of running in the Worker process
• Fix: ADM token refresh failure returns updated notification instead of error tuple

v1.1.3

• More robust FCM/APNS backpressure
• Bumped minimum Kadabra version to v0.3.6

v1.1.2

• Auto-restart connections if max stream ID is reached
• FCM/APNS Workers now use GenStage to queue pending pushes
• Bumped minimum Kadabra version to v0.3.5

v1.1.1

• Bumped minimum Kadabra version to v0.3.4