httpx: uncomment commented out test
sbt; remove ls-sbt
docs & site: update for 1.0-M8.1, smaller fixes
routing: add another ParameterDirectives test
http: fix cookie parser not accepting space chars in path or extension, relax cookie attribute matching to be case-insensitive
routing: add headerValueByName(Symbol) and optionalHeaderValueByName(Symbol) overload
docs: restructure Project Info chapters, add "External Resources" chapter, closes #250, #192
docs: restructure Introduction chapters, add getting-started, closes #74
docs: add pointer to new getting-started chapter, close #159
Added support to play-json with basic error handling.