Added BlockSpread, BlockForm and BlockFade events.

src/main/java/org/bukkit/event/block/BlockFadeEvent.java

@@ -0,0 +1,48 @@
+package org.bukkit.event.block;
+
+import org.bukkit.Material;
+import org.bukkit.block.Block;
+import org.bukkit.block.BlockState;
+import org.bukkit.event.Cancellable;
+/**
+ *Called when a block fades, melts or disappears based on world conditions
+ */
+public class BlockFadeEvent extends BlockEvent implements Cancellable {
+    private boolean cancelled;
+    private BlockState newState;
+
+    public BlockFadeEvent(Block block, BlockState newState) {
+        super(Type.BLOCK_FADE, block);
+        this.newState = newState;
+        this.cancelled = false;
+    }
+
+    /**
+     * Gets the state of the block that will be fading
+     *
+     * @return the block state
+     */
+    public BlockState getNewState() {
+        return newState;
+    }
+
+    /**
+     * Gets the cancellation state of this event. A cancelled event will not
+     * be executed in the server, but will still pass to other plugins
+     *
+     * @return true if this event is cancelled
+     */
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    /**
+     * Sets the cancellation state of this event. A cancelled event will not
+     * be executed in the server, but will still pass to other plugins
+     *
+     * @param cancel true if you wish to cancel snow from forming during a ice formation
+     */
+    public void setCancelled(boolean cancel) {
+        this.cancelled = cancel;
+    }
+}