Smaller bundle size with Webpack 5
Behind the scenes, typescript and Webpack 5 are now used. More typings have also been added to the PHP code.
This update requires Flarum 1.2+ and PHP 7.4 or 8.x
EDIT: I forgot to add the PHP 7.4 constraint to Composer, so you'll get an error at run time if you install this version on PHP 7.3. Tagging a new release won't solve the issue if the existing release continues to exist and I don't want to delete the existing release so I'll leave things like this.