Refactor Value Parser

[inveterateliterate]

I was flipping through all the parsers and I wonder if there's a bigger refactor available here: ValueParser could handle the array and empty checks. HashParser doesn't inherit from ValueParser (not totally sure why) but perhaps by the same logic ArrayParser could inherit from Base. All the other parsers do these same two checks. I haven't done a deep dive to test that out but wanted to surface