Force cluster-rebuilds on the first detected change, if their bounds do not match.

Also use a client-side method to update connected textures
for crafting cubes if two previously distinct clusters are connected.
Refactored MBCalculator to use generics for type checks and remove more casts.

src/main/java/appeng/block/crafting/AbstractCraftingUnitBlock.java

@@ -23,10 +23,13 @@ import net.minecraft.block.BlockState;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.state.BooleanProperty;
 import net.minecraft.state.StateContainer;
+import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.ActionResultType;
+import net.minecraft.util.Direction;
 import net.minecraft.util.Hand;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.BlockRayTraceResult;
+import net.minecraft.world.IWorld;
 import net.minecraft.world.World;
 
 import appeng.block.AEBaseTileBlock;
@@ -54,6 +57,16 @@ public abstract class AbstractCraftingUnitBlock<T extends CraftingTileEntity> ex
         builder.add(FORMED);
     }
 
+    @Override
+    public BlockState updatePostPlacement(BlockState stateIn, Direction facing, BlockState facingState, IWorld worldIn,
+            BlockPos currentPos, BlockPos facingPos) {
+        TileEntity te = worldIn.getTileEntity(currentPos);
+        if (te != null) {
+            te.requestModelDataUpdate();
+        }
+        return super.updatePostPlacement(stateIn, facing, facingState, worldIn, currentPos, facingPos);
+    }
+
     @Override
     public void neighborChanged(final BlockState state, final World worldIn, final BlockPos pos, final Block blockIn,
             final BlockPos fromPos, boolean isMoving) {