interpolation:
http://docs.scala-lang.org/overviews/core/string-interpolation.html
http://www.scala-lang.org/api/2.12.0/scala/StringContext.html
https://madusudanan.com/blog/scala-tutorials-part-11-string-interpolation/
http://stackoverflow.com/questions/22643036/scala-runtime-string-interpolation-formatting

http://co.ntextu.al/
https://github.com/propensive/contextual
http://co.ntextu.al/_/api/index.html