Export PDF value grid before running APFEL

Created by: nhartland

Given #151 (closed) it's probably a good idea to write out some representation of the best-fit PDFs before APFEL is called for anything. In this way everything isn't lost if APFEL crashes.

requested review from @enocera

requested review from @enocera

Created by: nhartland

(Also removes some methods of FitPDFSet that I can't see actually being called anywhere)

Merged by: nhartland at 2018-03-29 13:38:29 UTC

closed

merged manually