pick a scalacheck hash that works with scala 2.11.0 final
remove what I think is an unnecessary and confusing build instruction,
but maybe I will regret this
broaden access scope of this method, as scala 2.11 apparently requires
freshen up these versions
scalacheck is really nicely crosscompiled these days so we can stop
these source dependency shenanigans that require unfathomable
adjustments after some sbt upgrades
oh cool another sbt upgrade