Rewrite arrow metadata and remove 0x10 metadata flag in 1.12.2 -> 1.13

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13_1to1_13/MetadataRewriter.java

@@ -31,8 +31,8 @@ public class MetadataRewriter {
                     int data = (int) metadata.getValue();
                     metadata.setValue(Protocol1_13_1To1_13.getNewBlockStateId(data));
                 }
-                if(type.is(EntityType.ITEM)){
+                if (type.isOrHasParent(EntityType.ABSTRACT_ARROW) && metadata.getId() >= 7) {
-
+                    metadata.setId(metadata.getId() + 1); // New shooter UUID
                 }
             } catch (Exception e) {
                 metadatas.remove(metadata);

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/MetadataRewriter.java

@@ -79,6 +79,11 @@ public class MetadataRewriter {
                     if (metadata.getId() >= 9)
                         metadatas.remove(metadata); // Remove
                 }
+
+                if (metadata.getId() == 0) {
+                    metadata.setValue((byte) ((byte) metadata.getValue() & ~0x10)); // Previously unused, now swimming
+                }
+
                 // TODO: Boat has changed
             } catch (Exception e) {
                 metadatas.remove(metadata);