This allows parsing a request parameter using an attoparsec Parser, which I found quite useful. The original name of the routine was getParamWith but I renamed it to match other functions in CoreUtils module.
Added parseMayParam helper
Hmmmm, my initial thought is to not pollute the package with dependencies on things like attoparsec. Maybe a more general function for dealing with Maybes and params would be good though.
I thought of this as well. However, aeson already pulls attoparsec into the dep tree.
Merge from upstream
Merge remote-tracking branch 'upstream/master'
Any new thoughts?