Handle new players more gracefully
Better IP detection on linux (ugly, but effective)
Tweaking syntax to keep cython happy
Don't die saving in crash recovery
fixup
Don't crash is deleting a block that isn't there
Fix & activate cracking texture while block breaking
Fix crafting-drop bug

When using right click to drop one item from a stack onto another stack, the code used
to forget any remaining items from the stack you were holding.  This fixes that, and
possibly other related edge cases.