* Add CopyrightHeader support for sbt-boilerplate plugin.
* Add CopyrightHeader support for `*.proto` files.
* Add regex match for both `–` and `-` for CopyrightHeader.
* Add CopyrightHeader support for sbt build files.
* Update copyright from 2018 to 2019.
* +str,typ introduce akka typed ask for akka stream
address feedback and add actor interop stages incl ask to docs
more compile tests and adjusted things
last docs
* document adding stages to docs in CONTRIBUTING
* address review comments
* rebase conflicts