Add RFC5861 cache directives.
Remove RequestDirective and ResponseDirective. They're not used.
Parse stale-if-error and stale-while-revalidate.
Oops, I ate a parser rule.
Rework renderable and Header rendering
Merge branch 'develop' of https://github.com/http4s/http4s into develop
Make process writer use trampoline
Add caching process writer to blaze backend
Initial, ugly impl.
Most (all?) headers don't have a logger.
Rename raw to toRaw.
Tuck away intermediate header and key types to clean up top-level API.
Cleanup Http1Stage and write some tests
Merge branch 'topic/blazeCache' into develop
Fix bug
Add Transfer-Encoding parser and make Connection header case insensitive
Woops... fix tests.
Continue hardening blaze
some cleanup
add ResponseSyntax to Http4s object and more header methods to ResponseSyntax