Bukkit/Bukkit — pull request #615 by cole2sworld (2012-05-26 13:04:35+00:00)
Title: Add Event.stopPropagating and Event.isPropagating

Adds https://bukkit.atlassian.net/browse/BUKKIT-1714 - allows a plugin to stop an event in it's tracks right then and there.

Like a hard-cancel.