Added block events

By: durron597 <martin.jared@gmail.com>

paper-api/src/org/bukkit/event/block/BlockFromToEvent.java

@@ -0,0 +1,34 @@
+package org.bukkit.event.block;
+
+import org.bukkit.Block;
+import org.bukkit.event.Event;
+
+/**
+ * Holds information for events with a source block and a destination block
+ */
+public class BlockFromToEvent extends BlockEvent {
+    protected Block from;
+
+    public BlockFromToEvent(final Event.Type type, final Block from, final Block to) {
+        super(type, to);
+        this.from = from;
+    }
+
+    /**
+     * Gets the location this player moved to
+     *
+     * @return Block the block is event originated from
+     */
+    public Block getFrom() {
+        return from;
+    }
+
+    /**
+     * Gets the target block of this event
+     *
+     * @return Block the block containing this event
+     */
+    public Block getTo() {
+        return getBlock();
+    }
+}