[Bleeding] Changed event system into a new, much faster design. Huge thanks to @zml2008 & @lahwran.

src/main/java/org/bukkit/event/EventPriority.java

@@ -0,0 +1,45 @@
+package org.bukkit.event;
+
+/**
+ * Represents an event's priority in execution
+ */
+public enum EventPriority {
+    /**
+     * Event call is of very low importance and should be ran first, to allow
+     * other plugins to further customise the outcome
+     */
+    LOWEST(0),
+    /**
+     * Event call is of low importance
+     */
+    LOW(1),
+    /**
+     * Event call is neither important or unimportant, and may be ran normally
+     */
+    NORMAL(2),
+    /**
+     * Event call is of high importance
+     */
+    HIGH(3),
+    /**
+     * Event call is critical and must have the final say in what happens
+     * to the event
+     */
+    HIGHEST(4),
+    /**
+     * Event is listened to purely for monitoring the outcome of an event.
+     * <p/>
+     * No modifications to the event should be made under this priority
+     */
+    MONITOR(5);
+
+    private final int slot;
+
+    private EventPriority(int slot) {
+        this.slot = slot;
+    }
+
+    public int getSlot() {
+        return slot;
+    }
+}