message: leave a comment about the map/reduce.
diff: @@ -19,6 +19,8 @@ async function githubPush(webhook: WebhookRequestData, project: Project) {
  const branchName = body.ref.toLowerCase().replace('refs/heads/','')
  const sha = body.after
  + // for each item in the body.commits array, search for our regular expression; this is an arroy of boolean
  + // which is .reduced into a single true if any are true.
  const skip_deploy = body.commits.map( commit => Array.isArray(commit.message.match(/skip deploy|deploy skip/i)))
  .reduce( function(a,i,x,z) { return a||i })
  if (skip_deploy) {
  