[Soc2014] Official meta API

Why are `include_parents` and `include_hidden` explicit parameters, while `forward`, `reverse`, and `export_ordered_set` are popped off `kwargs`?

Also, what's the rationale behind which filters are available as arguments to this method, and which you have to do yourself by filtering the fields you get back?

Lastly, `export_ordered_set` is a really ugly option. It's quite mysterious what it does, or why you would use it. And it also seems to be unused - there are two places that claim to call this method with it True (in a comment), but don't. I can't find anywhere that uses it. So can it be removed?