To translate the strings in the mod, go into resources/assets/iguanatweaks/lang, get the en_US.lang file, translate strings from here and pull request (or send me privately wherever you want) a new file with translations.
When editing .lang files, please don't remove %x and §x (if any)
Those are used respectively for in-code values and for color

• Italian (me)
• German
• Spanish (needs update)
• French
• Russian
• Greek
• Korean
• Japanese
• Chinese (Simplified)
• Chinese (Traditional)