Bad news

[burrbull]

cc @therealprof

I think I made regression with FR field.
Now there is no access to field enums to compare they manually. It's my mistake. Big mistake.
It doesn't break most of code, but it's regression.
I think we should revert #343.

Alternative is to add values method to reader.

[therealprof]

Well, the release is out. But I'm not even sure that was intentional that one could do that. Do you see any usecase for that?