Add MCoreCancellableEvent

src/com/massivecraft/mcore/event/MCoreCancellableEvent.java

@@ -0,0 +1,15 @@
+package com.massivecraft.mcore.event;
+
+import org.bukkit.event.Cancellable;
+
+public abstract class MCoreCancellableEvent extends MCoreEvent implements Cancellable
+{
+	// -------------------------------------------- //
+	// FIELDS
+	// -------------------------------------------- //
+	
+	private boolean cancelled = false;
+	@Override public boolean isCancelled() { return this.cancelled; }
+	@Override public void setCancelled(boolean cancelled) { this.cancelled = cancelled; }
+	
+}