[Merge] lp:~barry/mailman/falcon into lp:mailman

Barry Warsaw has proposed merging lp:~barry/mailman/falcon into lp:mailman. Requested reviews: Mailman Coders (mailman-coders) For more details, see: https://code.launchpad.net/~barry/mailman/falcon/+merge/230913 Port from restish to falcon for the REST API framework. This currently depends on an unmerged falcon pull request: https://github.com/racker/falcon/pull/307 -- https://code.launchpad.net/~barry/mailman/falcon/+merge/230913 Your team Mailman Coders is requested to review the proposed merge of lp:~barry/mailman/falcon into lp:mailman.