Nice project. I have several questions :<p>1. Does this<p>`Asset Rack is not a build a tool. It never writes files to disk, there is no "build step". Everything happens "just in time".`<p>means that it will compile my assets on every request with no cache?<p>2. Can you be more specific how can someone contribute to your project by creating external modules? Your tutorial link is 404.<p><a href="https://github.com/techpines/asset-rack-new/tree/master/lib#extending-the-asset-class" rel="nofollow">https://github.com/techpines/asset-rack-new/tree/master/lib#...</a>