Merge pull request #601 from steffengy/1.5

Fix #535 to make plugin channels work as supposed. [WORLDEDIT]
Implement LEFT_CLICK_AIR (arm swing) event to make for example CommandBooks Thor work
Fixes #146
Merge pull request #602 from steffengy/1.5

Implement AIR Clicks out of range [Thor, VoxelSniper?]
Use chunk cordinates of the block while getting the block instead of the player.
Fixes #593 Thanks to @nallar