Function to remove HTTP whitespace was already written in Servo! Though we don’t know if ByteString will be a valid input type, so we’ll just keep this knowledge in the back of our mind.
TODO:
Implement new() for our Headers struct.
Finish up writing Append.
Probably should use set.
As set requires the header name (which is a ByteString) to implement Into<Cow<'static, str>>, we might have to implement it ourselves (impl Into<Cow<'static, str>> for ByteString).