Upgrade to Scalaz 7.10 and all that entains

I have removed wartremover because it was causing compiler errors in one of the
specs due to >> which we may want to fix
Removed propertiesAsResult implicit as no longer required
Add manual Numeric implicit to avoid compiler errors
Upgrade to SBT 0.13.6-M1
Add Typesafe releases repo for scala 2.10.2
Merge pull request #18 from NICTA/topic/scalaz-7.10

Upgrade to Scalaz 7.10 and all that entails