Create changelog when bumping version during release (#768)

Author: awschristou

buildspec/bumpVersion.yml

@@ -32,6 +32,13 @@ phases:
                 else
                   npm version minor
                 fi
+                npm run createRelease
+                git commit -m "Update version to $VERSION"
+                echo "tagging commit"
+                git tag -a v$VERSION -m "version $VERSION $DATE"
+                # cleanup
+                git clean -fxd
+                git reset HEAD --hard
 artifacts:
     files:
         - '**/*'