Implementation for the new rotation values. Fixes SPIGOT-93

src/main/java/org/bukkit/craftbukkit/entity/CraftItemFrame.java

@@ -52,11 +52,19 @@ public class CraftItemFrame extends CraftHanging implements ItemFrame {
             case 0:
                 return Rotation.NONE;
             case 1:
-            return Rotation.CLOCKWISE;
+                return Rotation.CLOCKWISE_45;
             case 2:
-            return Rotation.FLIPPED;
+                return Rotation.CLOCKWISE;
             case 3:
+                return Rotation.CLOCKWISE_135;
+            case 4:
+                return Rotation.FLIPPED;
+            case 5:
+                return Rotation.FLIPPED_45;
+            case 6:
                 return Rotation.COUNTER_CLOCKWISE;
+            case 7:
+                return Rotation.COUNTER_CLOCKWISE_45;
             default:
                 throw new AssertionError("Unknown rotation " + value + " for " + getHandle());
         }
@@ -72,12 +80,20 @@ public class CraftItemFrame extends CraftHanging implements ItemFrame {
         switch (rotation) {
             case NONE:
                 return 0;
-        case CLOCKWISE:
+            case CLOCKWISE_45:
                 return 1;
-        case FLIPPED:
+            case CLOCKWISE:
                 return 2;
-        case COUNTER_CLOCKWISE:
+            case CLOCKWISE_135:
                 return 3;
+            case FLIPPED:
+                return 4;
+            case FLIPPED_45:
+                return 5;
+            case COUNTER_CLOCKWISE:
+                return 6;
+            case COUNTER_CLOCKWISE_45:
+                return 7;
             default:
                 throw new IllegalArgumentException(rotation + " is not applicable to an ItemFrame");
         }