make sbt-version-policy allow us to release 1.1.3(-RCx)#460

SethTisue wants to merge 2 commits intoscala:1.1.xscala/scala-parser-combinators:1.1.xfrom

SethTisue:adjust-version-policy-on-1.1.xSethTisue/scala-parser-combinators:adjust-version-policy-on-1.1.xCopy head branch name to clipboard