Add edited action to issues and pull requests

* src/main/scala/codecheck/github/models/Issue.scala (edited): New
case object.

* src/main/scala/codecheck/github/models/PullRequest.scala
(edited): New case object.

Author: ashawley

src/main/scala/codecheck/github/models/Issue.scala

@@ -139,6 +139,7 @@ object IssueAction {
   case object labeled     extends IssueAction("labeled")
   case object unlabeled   extends IssueAction("unlabeled")
   case object opened      extends IssueAction("opened")
+  case object edited      extends IssueAction("edited")
   case object closed      extends IssueAction("closed")
   case object reopened    extends IssueAction("reopened")
 

src/main/scala/codecheck/github/models/PullRequest.scala

@@ -19,6 +19,7 @@ object PullRequestAction {
   case object labeled     extends PullRequestAction("labeled")
   case object unlabeled   extends PullRequestAction("unlabeled")
   case object opened      extends PullRequestAction("opened")
+  case object edited      extends PullRequestAction("edited")
   case object closed      extends PullRequestAction("closed")
   case object reopened    extends PullRequestAction("reopened")
   case object synchronize extends PullRequestAction("synchronize")