UpdateFixerUpper is a mod designed to help when updating mods, to prevent world corruption and replace items with equivalents

REMEMBER TO MAKE BACKUPS! UFU DOES NOT CARE WHAT IT IS CHANGING

Using UFU

1. ufu.txt is the file that controls replacements, the file is created in the config folder the first time you run the game with UFU installed, but you can create it yourself.
2. Replacements are handled in pairs, with a pair being a line in ufu.txt of the format old identifier -> new identifier
3. On world load, UFU will replace any identifier matching old identifier with new identifier when old identifier is used as a key in a DefaultedRegistry

(Note: Although the name may imply it, UFU does not use DFU (data fixer upper), it was originally planned to, but that fell through and I decided to keep the name)