Fixed the clever's mining fatigue still active after throwing the cle…

…aver, closes #731

src/main/java/tconstruct/items/tools/Cleaver.java

@@ -150,7 +150,7 @@ public void onUpdate (ItemStack stack, World world, Entity entity, int par4, boo
             ItemStack equipped = player.getCurrentEquippedItem();
             if (equipped == stack)
             {
-                player.addPotionEffect(new PotionEffect(Potion.digSlowdown.id, 1, 2));
+                player.addPotionEffect(new PotionEffect(Potion.digSlowdown.id, 2, 2, true));
             }
         }
     }