Preliminary !pp functionality

Very likely the wrong way to go, but extremely fast and dirty. Took me 10 minutes and I've never written Python.

Does NOT support !pp 3 or !pp 2.

There are two comments added. If implementing either of these commented lines requires more than 3 lines of code, please reject this pull request, and let me know - I'll have to discuss with you the work I'd need to do to get the functionality up and running (since I didn't find where you were making the R4 api call...)