Event Handler for Grenade Killing

Fixes the Death Message with the explosion fix
Starts Event Handler

Starts my event handler
Fixes the claim bypass and a dupe

Fixes the improper useage of the breakevent and a way to dupe iron ore using multipliers
Fixes Explosions for SMP
Forgot to change the version number back
Merge pull request #625 from BlackJack55/SMP-Fixes

Smp fixes