Added EXTENSION to the Driver enum for events.
Merge pull request #82 from EntityReborn/master

Added Driver.EXTENSION for extension based events.
Fixed a division by zero exception.
Merge branch 'master' of github.com:sk89q/commandhelper.git
added all_entities, [set_]entity_loc, and [set_]entity_velocity, has_storm, has_thunder, and set_thunder
Merge pull request #81 from jb-aero/pullable

entity and weather updates
Merge branch 'master' of github.com:sk89q/commandhelper.git