File extension of handlebar files is not correct.
### Changes to discuss
File extension `.hb` is misleading GitHub as it is showing harbour programming language instead of handlebars.
It can be `.hbs` or `.handlebars`
@frappelatte28 You are right. But Handlebars should receive an upgrade as well as seen here. I currently have no time to test this. If you want to jump in and lend a helping hand: Every contribution is welcome.