Bumped sbt version to 0.12.2 and Scala version to 2.10.0. This was done to allow us to move Content API up to Scala 2.10
Removing old versions of scala.
Bumped to scala version 2.10.1
Use latest version of dispatch-classic (pre reboot)
Use latest available version of ScalaIO, tweak sbt a bit

I don't /think/ you need to cross-compile against both Scala "2.10.0" &
"2.10.1", the resulting artifacts for both of them will just use "2.10"
as the scala version in it's name, and they're meant to be binary
compatible.

+ publish-local works for me with this conf, so hopefully it's all good.
Updated version for release
Merge pull request #2 from guardian/bump-sbt-and-scala-version

Bumped sbt version to 0.12.2 and Scala version to 2.10.1.