Issue 1843 - RCON worker threads synchronization corrected
Added ThreadManager, removed PHP self-kill
Fixed AsyncWorker not getting the proper path and not using the correct class
Hide timezone guess errors
Merge pull request #1846 from milo1000/issue_1843

Issue 1843 - RCON worker threads synchronization corrected
Fixed AsyncWorker includes
Fixed crashes related to ChunkEvent
Update CONTRIBUTING.md

PocketMine namespaces are all in lowercase letters.
Merge pull request #1859 from PEMapModder/patch-2

Update CONTRIBUTING.md
Fixed #1826 Block damage values were swapped in McRegion
Merge branch 'master' of github.com:PocketMine/PocketMine-MP
Possible fix for 'Invalid Chunk given' crash
Players are now moved using the head, closes #1842
Fixed source servers getting invalid AutoUpdater notifications
Made AsyncTask::onCompletion() implementation optional
Fixed RCON usage
Remove head offset from client-side MovePlayerPacket
Implemented circular chunk sending
Level formats can send chunks without creating an AsyncTask, API 1.2.1 (small fix, no changes)
Fixed AddMobPacket's Type - (is now int)

Thanks @Intyre!