Currently, only Sass/Less within the /src/assets/ folder are compiled. This means that any theme-specific styles I add to my theme-assets folder won't be compiled by PatternPack.

We already dictate the location of your theme, and even provide a handlebars helper for {{themeassets}}. I think we should make the following updates:

• Add a sass task that compiles theme/**/*.scss -> *.css
• Add a less task that compiles theme/**/*.less -> *.css
• Add theme/**/*.css as a src in our postcss task
• Add theme/**/*.{scss,less} to our watch task

These would be simple updates that would extend PatternPack's support of building custom themes.