1.0 Release Goals

I wanted to open up a discussion for what we consider needed for a 1.0 release. I think the core code is shaping up to be solid and getting tested well in a number of environments. Is there anything folks see as "should have" or "must have" for 1.0?

My starting note would be to make sure we have an interface pass for flags, old control planes that we maybe don't want to support because of how-it-was in nbconvert. Essential do a check if any config options don't make sense or should be added / removed.

Additionally I think making interface frictions like what came up here https://github.com/nteract/papermill/issues/490 less annoying and handled more automatically.