changes coming in (fab) v0.5.0
here's a quick outline of some of the stuff i'm working on in the next release of (fab). once i have the internals working again, i'll push a branch for folks to play with.
right now, (fab) is mostly async, but relies on sync in one case: apps need to return a listener if they require more information to finish. this is a problem because apps may not know if they need more information until they hear from their upstream apps.
for example, a template app needs to return a function based on a string, but that string may come from an async file or http request, so the app can't reliably respond immediately.