= docs: add section about PathMatcher changes to migration guide
+ routing: add parameterless `/` modifier for PathMatcher

So you can say `path("foo" /)` instead of `path("foo" ~ Slash)`.
= httpx: fix TwirlSupport XML marshalling

When the client is a browser the `twirl.api.Xml` marshaller was always rendering to `text/html` instead of `text/xml` (since we had added support for q-values in the meantime and browser prefer HTML over XML).
Also see #664 for a related feature ticket.
= site: fix broken routes, add missing reveal.js plugins for scala.io slides
+ httpx: add `DelegatingToResponseMarshallingContext` and `withEntityMapped`/`withResponseMapped` helpers
= routing: small fix in tests
= http: Made parsing Authorization scheme and "realm" parameter case-insensitive. Fixes #668
Merge pull request #659 from jrudolph/w/document-breaking-changes

= docs: add section about PathMatcher changes to migration guide
Merge pull request #665 from spray/wip/misc

+ routing: add parameterless `/` modifier for PathMatcher, other smaller things
Merge pull request #669 from spray/wip/DelegatingToResponseMarshallingContext

+ httpx: add some more marshalling helpers
= docs, examples: replace remaining uses of `path("")`
= site: update RC2 documentation JSON snapshots
Merge pull request #672 from markvandertol/ticket_668

= http: Made parsing Authorization scheme and "realm" parameter case-insensitive
= site: add wjax talk, fixes in scala.io talk