Added NumericEqualityConstraints and Spec for it, left it private[scalactic] for the 2.2.0 release.
Bumped version to 2.2.0.
First round of rewriting error messages using FailureMessages in tests, for those that is affected by adjustments of contain matchers error messages.
Minor scaladoc fix in Containing.scala.
Adjusted error message for noneOf contain matcher to use 'at least one of'.
Fixed broken tests generated by GenContain.scala.
Make dependsOn(scalatest) in scalactic dependsOn(scalatest % "test") to at least
get the scalatest dependency in the scalactic pom file to be in the test scope.
Merge branch 'contain-matcher-err-msg' of https://github.com/cheeseng/scalatest