Added various 1.6 portal events.

By: Stephen <stephen@jazer.com>

paper-api/src/main/java/org/bukkit/event/Event.java

@@ -229,6 +229,12 @@ public abstract class Event implements Serializable {
          * @see org.bukkit.event.player.PlayerMoveEvent
          */
         PLAYER_TELEPORT (Category.PLAYER),
+        /**
+         * Called when a player completes the portaling process by standing in a portal
+         *
+         * @see org.bukkit.event.player.PlayerPortalEvent
+         */
+        PLAYER_PORTAL (Category.PLAYER),
         /**
          * Called when a player changes their held item
          *
@@ -483,6 +489,12 @@ public abstract class Event implements Serializable {
          * Called when a World is unloaded
          */
         WORLD_UNLOAD (Category.WORLD),
+        /**
+         * Called when world attempts to create a matching end to a portal
+         *
+         * @see org.bukkit.event.world.PortalCreateEvent
+         */
+        PORTAL_CREATE (Category.WORLD),
 
         /**
          * ENTITY EVENTS
@@ -500,6 +512,12 @@ public abstract class Event implements Serializable {
          * @see org.bukkit.event.painting.PaintingRemoveEvent
          */
         PAINTING_BREAK (Category.ENTITY),
+        /**
+         * Called when an entity touches a portal block
+         *
+         * @see org.bukkit.event.entity.EntityPortalEnterEvent
+         */
+        ENTITY_PORTAL_ENTER (Category.ENTITY),
 
         /**
          * LIVING_ENTITY EVENTS