Update to paradise-M7 and Scala 2.10.4

Hi,

Yet another update, this time — to accommodate changes in `paradise-M7`. You can find the details [on the scalamacros site](http://scalamacros.org/news/2014/04/03/macro-paradise-2.0.0-M7.html) and in [my google group post](https://groups.google.com/forum/#!topic/scala-internals/V9krF0y5y_g). The update prevents *Wartremover* from conflicting with other libraries, which could be observed before because of the full cross-versioning of `quasiquotes`. While we are at it, I also update to Scala `2.10.4`. `2.11.0-RC4` is out as well, but unfortunately `scalatest` is not published yet.