Add definitions for Minecraft 1.9 gameplay elements

Includes an API for AreaEffectCloud and rework of Sound enum to include new sound values.

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/block/Biome.java

@@ -4,27 +4,27 @@ package org.bukkit.block;
  * Holds all accepted Biomes in the default server
  */
 public enum Biome {
-    SWAMPLAND,
+    OCEAN,
+    PLAINS,
+    DESERT,
+    EXTREME_HILLS,
     FOREST,
     TAIGA,
-    DESERT,
-    PLAINS,
+    SWAMPLAND,
+    RIVER,
     HELL,
     SKY,
-    OCEAN,
-    RIVER,
-    EXTREME_HILLS,
     FROZEN_OCEAN,
     FROZEN_RIVER,
-    ICE_PLAINS,
+    ICE_FLATS,
     ICE_MOUNTAINS,
     MUSHROOM_ISLAND,
-    MUSHROOM_SHORE,
-    BEACH,
+    MUSHROOM_ISLAND_SHORE,
+    BEACHES,
     DESERT_HILLS,
     FOREST_HILLS,
     TAIGA_HILLS,
-    SMALL_MOUNTAINS,
+    SMALLER_EXTREME_HILLS,
     JUNGLE,
     JUNGLE_HILLS,
     JUNGLE_EDGE,
@@ -34,35 +34,36 @@ public enum Biome {
     BIRCH_FOREST,
     BIRCH_FOREST_HILLS,
     ROOFED_FOREST,
-    COLD_TAIGA,
-    COLD_TAIGA_HILLS,
-    MEGA_TAIGA,
-    MEGA_TAIGA_HILLS,
-    EXTREME_HILLS_PLUS,
+    TAIGA_COLD,
+    TAIGA_COLD_HILLS,
+    REDWOOD_TAIGA,
+    REDWOOD_TAIGA_HILLS,
+    EXTREME_HILLS_WITH_TREES,
     SAVANNA,
-    SAVANNA_PLATEAU,
+    SAVANNA_ROCK,
     MESA,
-    MESA_PLATEAU_FOREST,
-    MESA_PLATEAU,
-    SUNFLOWER_PLAINS,
-    DESERT_MOUNTAINS,
-    FLOWER_FOREST,
-    TAIGA_MOUNTAINS,
-    SWAMPLAND_MOUNTAINS,
-    ICE_PLAINS_SPIKES,
-    JUNGLE_MOUNTAINS,
-    JUNGLE_EDGE_MOUNTAINS,
-    COLD_TAIGA_MOUNTAINS,
-    SAVANNA_MOUNTAINS,
-    SAVANNA_PLATEAU_MOUNTAINS,
-    MESA_BRYCE,
-    MESA_PLATEAU_FOREST_MOUNTAINS,
-    MESA_PLATEAU_MOUNTAINS,
-    BIRCH_FOREST_MOUNTAINS,
-    BIRCH_FOREST_HILLS_MOUNTAINS,
-    ROOFED_FOREST_MOUNTAINS,
-    MEGA_SPRUCE_TAIGA,
-    EXTREME_HILLS_MOUNTAINS,
-    EXTREME_HILLS_PLUS_MOUNTAINS,
-    MEGA_SPRUCE_TAIGA_HILLS,
+    MESA_ROCK,
+    MESA_CLEAR_ROCK,
+    VOID,
+    MUTATED_PLAINS,
+    MUTATED_DESERT,
+    MUTATED_EXTREME_HILLS,
+    MUTATED_FOREST,
+    MUTATED_TAIGA,
+    MUTATED_SWAMPLAND,
+    MUTATED_ICE_FLATS,
+    MUTATED_JUNGLE,
+    MUTATED_JUNGLE_EDGE,
+    MUTATED_BIRCH_FOREST,
+    MUTATED_BIRCH_FOREST_HILLS,
+    MUTATED_ROOFED_FOREST,
+    MUTATED_TAIGA_COLD,
+    MUTATED_REDWOOD_TAIGA,
+    MUTATED_REDWOOD_TAIGA_HILLS,
+    MUTATED_EXTREME_HILLS_WITH_TREES,
+    MUTATED_SAVANNA,
+    MUTATED_SAVANNA_ROCK,
+    MUTATED_MESA,
+    MUTATED_MESA_ROCK,
+    MUTATED_MESA_CLEAR_ROCK
 }

paper-api/src/main/java/org/bukkit/block/EndGateway.java

@@ -0,0 +1,3 @@
+package org.bukkit.block;
+
+public interface EndGateway extends BlockState {}

paper-api/src/main/java/org/bukkit/block/Structure.java

@@ -0,0 +1,3 @@
+package org.bukkit.block;
+
+public interface Structure extends BlockState {}