Ballotbox

Changes:

• Options are now data-driven from options.json in the same format
• Allow mod ID for icons to be overridden with mod_id field.
• Fix brandings for modfest 1.21 (we really gotta make that respack driven, how do you get texture width again?)
• Improve icons to match modmenu code.

Full Changelog: https://github.com/ModFest/ballotbox/compare/v0.4.3...v0.5.0