= docs: resort versions in list, fixes #720
Merge pull request #722 from jrudolph/i/720/reorder-doc-versions

= docs: resort versions in list, fixes #720
= can: make sure redirects reuse same connection if possible, fixes #719
= can: enable redirection for any 307 responses

This is because the latest httpbis draft doesn't explicit state
anymore that a request should only be redirected for GET or HEAD
requests when 307 is received.

See https://tools.ietf.org/html/draft-ietf-httpbis-p2-semantics-25#section-6.4.7

Also, added a comment about 302 handling.
= build: upgrade scala version for travis
Merge pull request #723 from jrudolph/i/719/reuse-connection-on-redirect

= can: make sure redirects reuse same connection if possible, fixes #719
= docs: improve signature including by matching all lines to the final '=' of the signature
= docs: add MiscDirectives documentation
= docs: add overview to distinguish directives by request or response
= docs: add RoutingDirectives docs, refs #442
= docs: add RespondWithDirectives docs, refs #442
Merge pull request #724 from spray/ticket/442

= docs: add RoutingDirectives docs
Merge pull request #725 from spray/wip/442

= docs: add RespondWithDirectives docs, refs #442
Merge pull request #726 from jrudolph/w/add-directive-documentation

More directive documentation
= site: add OpenSearch "search" and suggestions plugin for easy documentation access, refs #136
= site: add search box to page that shares suggestions with OpenSearch

Also got rid of directive search as this is completely contained in the
documentation search.
Merge pull request #727 from jrudolph/w/add-directive-search

= site: add OpenSearch "search" and suggestions plugin for easy documentation access
= docs: smaller additions to FileAndResourceDirectives docs
= site: update all docs to current versions
= site: improve other-resources chapter, fix broken links