v. 0.6.1

== Additions ==
Added onSocketJoin, onSocketError and onSocketClose

== Fixes ==
Improved update of submodule in build
Made data optional on event emit
Fix cancellation of events

== Removals ==
Removed default plug.dj event types to be used via API instead

== Tests ==
Added test for once events
Added test for error catching on emitting events
Renamed every event test to use own eventtype