Fixes
+ Train station item merging has been fixed to check once every 60 seconds if the inventory is full, not once every second. For servers using a lot of train stations this should remove their performance impact to near nothing.
+ Fixed an issue with biters when breaking a block that was used by a mover.

Notes
+ Please send in sparks profiler reports! I would like to do a batch of optimizations! So if you can and are willing please send one in!