Enable macro paradise in all projects
Use null-handler of Option() in Field.defaultValue
Publish to Sonatype by default
Add openjdk8 to .travis.yml
Move src/ to bokeh/src and add aggregated 'all' project
Implement field collector using quasiquotes
Serialize Ref case class properly (Json.writes[Ref])
Add serializers for HList and Tuple{2,3}
Remove useless macros from core