1.4.4 compatibility

I only became aware of the update’s imminent release yesterday so I didn’t have time to do anything interesting.

As usual, hard-refresh (Ctrl+Shift+R on desktop) if the starting screen doesn’t show “updated for Terraria 1.4.4”

• The tool is now updated to 1.4.4 and seemingly even works.
  I can see that there’s a bunch of new stuff in the save file but I don’t know what it does, so feel free to complain about it in a few days once people figure out what is new and what is worth editing.
• Since the version list was really getting out of hand (I support 16 different Terraria versions now!), I made it into a menu.