The compiler platform will provide the following services: scala-compiler, scala-interactive, scala-scaladoc, and scala-repl.

We're also slimming down by removing dead or deprecated code, and enabling future weight loss through aggressive deprecation:

- The old implementations of the Pattern Matcher and the Bytecode Emitter have been removed, as they were replaced wholesale in Scala 2.10. The experimental .NET backend had been scrapped, and the search and destroy mission in #1648 snuffed ~5000 chunks of dead code.

- The following packages have been deprecated:

- `scala.actors`: see the [actors migration guide](http://docs.scala-lang.org/overviews/core/actors-migration-guide.html)

- Case classes with > 22 parameters are now supported SI-7296

- Infer bounds of existential types SI-1786

- @som-snytt added and improved several commands (:javap, :paste, :edit,...)

- @folone and @eed3si9n contributed the `:kind` command to help to tell ground types from type constructors (#2340)

- @rjolly made it possible to embed the repl as a JSR-166 Scripting Engine (#2206).