! util: revert breaking change from commit 6b139f009cee55bf2c5737ae385af2fb2b22625d
= docs: add docs for CacheConditionDirectives and RangeDirectives, closes #826
Merge pull request #829 from spray/ticket/826

Ticket/826
= project: update CHANGELOG for 1.x.1 release
= site: small tweak
= project: upgrade dependencies
= site: update for 1.x.1 release
= routing: fix `listDirectoryContents` not rendering line separators, closes #831
= routing: small fix the fix to #831
= build: upgrade to sbt-revolver 0.7.2
= build: upgrade to twirl 0.7.0