Add possibility to inline remote files

It would be nice to be able to do something like:

<!-- inline https://storage.googleapis.com/code.getmdl.io/1.0.6/material.min.js -->
<script inline src="https://storage.googleapis.com/code.getmdl.io/1.0.6/material.min.js"></script>

[popeindustries]

I’ve begun rewriting the codebase to use async/await and promises. In practice, this means the sync api will disappear, and there should be no technical hurdle to implementing this. I therefore plan to include a basic version of this feature in the same v6 release.

[tommedema]

Agree that this is a good feature.

@popeindustries if you don’t want to implement the fetching, perhaps you can add a onRemoteResource callback in which the user implements the fetching manually and returns a file as binary.