Individual events for when each file is parsed & rendered

We have an event system (yay!) but I think there's no way yet to know when each file is being parsed/rendered. We'd like to add some output while running our version of the parser - e.g.

> Parsing foo.rst
> Parsing bar.rst
> Rendering foo.html

Something like this - it'll help when there are errors and also help with seeing progress (we're thinking of also using these same events to show a progress bar through the parsing & rendering progress).

Is that possible now? Or can we dispatch a new event?

Thanks!