Bump to version 2.4.4

Adjust gradle user home path in release.yml

Prepare for 2.4.2 release

Update version in gradle to 2.4.1 (pusher#337)

Merge pull request pusher#332 from pusher/SubscriptionCountEvent

Add Subscription count event

Prepare for 2.3.0-beta release (pusher#329)

Merge pull request pusher#310 from pusher/add_global_event_listner

change log

Merge pull request pusher#307 from pusher/update-gson-gradle

Changelog

Merge pull request pusher#296 from pusher/release/2.2.6

Release v2.2.6

Release 2.2.5