Patrick McKenna

I don't believe we recorded any of the training sessions from Git Merge 2016, unfortunately. However, my talk was essentially an extended version of the one Michael gave in 2013,...

@sdispater if you could use another hand, I'm happy to help.

> I'm sorry, but we cannot loosen our pinning of `pyarrow`. @sfc-gh-mkeller would you please elaborate? Perhaps I'm missing something, but AFAICT, this package makes very limited use of `pyarrow`,...