fix book signing and opening in 18w50a

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_14to1_13_2/packets/InventoryPackets.java

@@ -85,6 +85,11 @@ public class InventoryPackets {
                                 wrapper.passthrough(Type.INT); // Number of tools uses
                                 wrapper.passthrough(Type.INT); // Maximum number of trade uses
                             }
+                        } else if (channel.equals("minecraft:book_open") || channel.equals("book_open")) {
+                            int hand = wrapper.read(Type.VAR_INT);
+                            wrapper.clearPacket();
+                            wrapper.setId(0x2C);
+                            wrapper.write(Type.VAR_INT, hand);
                         }
                     }
                 });

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_14to1_13_2/packets/PlayerPackets.java

@@ -28,6 +28,19 @@ public class PlayerPackets {
             }
         });
 
+        // Edit Book
+        protocol.registerIncoming(State.PLAY, 0x0B, 0x0B, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        InventoryPackets.toServer(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM));
+                    }
+                });
+            }
+        });
+
         // Player Digging
         protocol.registerIncoming(State.PLAY, 0x18, 0x18, new PacketRemapper() {
             @Override