Update specs2-core, specs2-scalacheck, ... to 4.6.0
Update specs2-core, specs2-scalacheck, ... to 4.6.0

quasar-analytics/quasar,quasar-analytics/quasar,quasar-analytics/quasar,quasar-analytics/quasar,djspiewak/quasar,slamdata/quasar