Refactor Members<T> to be less strange

[konkked]

Doing some weird stuff in Object reflection class Members, should probably refactor to be less bizarre

[zckeyser]

Looking at Members, I think that it'd make more sense to make each call a generic, rather than make the class itself a generic. That way it can have a syntax more similar to the rest of object, such as _.Object.Members.All<int>(obj, BindingFlags.Public), and then to have an optional filter that can be added there, like _.Object.Members.All<int>(obj, BindingFlags.Public, (a => a % 3 == 0)).