namespaced enums

[jgillich]

ref #123

Tests pass with #![allow(deprecated)], I am not sure how to fix that one.

[reem]

What's the deprecation warning coming from?

[jgillich]

HashMap::find_equiv: http://doc.rust-lang.org/std/collections/struct.HashMap.html#method.find_equiv

src/header/mod.rs:148:19: 148:53 error: use of deprecated item: use get and BorrowFrom instead, #[deny(deprecated)] on by default
src/header/mod.rs:148         self.data.find_equiv(&CaseInsensitive(name)).and_then(|item| {

[seanmonstar]

looks good to me. rust nightlies broke several things, I think fixing find_equiv can be a separate PR.

[reem]

Oh god cargo is breaking now. retrying.

[reem]

Ok, the only error here is from find_equiv, so I am merging with hopes to fix that in another PR.