SpongePowered/Sponge — pull request #52 by Raphfrk (2014-09-23 20:40:06+00:00)
Title: Adds event cancellation support

Adds support for event cancellation.
* Adds methods
* isCancellable() to all events
* setCancelled() and isCancelled() to cancellable events
* Adds a new interrface to the API
* Adds the forge cancellation annotation to all classes which implement the interface