ParsingError.incompleteMessage should be internal (return nil instead)

[weissi]

ParsingError.incompleteMessage must be internal. It's an implementation detail of the parser that must never leave its module.

[Davidde94]

I'm not sure I agree. If someone is using our parser manually, as they're entitled to, then surely it's sensible to tell them if a message is incomplete?

[Davidde94]

Discussed in person. To address my concern we'll return nil if there isn't enough data to parse. The end user can turn nil into an error if they want.