Full Inventory and Item Stacks

[Selah]

It's already in the game, albeit not automatically. You can just pick up the second stack, drop it on the first stack and you'll have a stack of 99 and a stack of 97. Also splitting, all you do is open up the menu and choose split stack or something like that.

Thank you! I knew about the split stack, but somehow missed the recombine thingie.