backport #234 and #327 (and infra changes) to 1.1.x branch#459

SethTisue merged 14 commits intoscala:1.1.xscala/scala-parser-combinators:1.1.xfrom

SethTisue:backport-pr234-and-pr27-to-1.1.xSethTisue/scala-parser-combinators:backport-pr234-and-pr27-to-1.1.xCopy head branch name to clipboard