3.9.1 because a local edit made it into npm

bower.json

 {
   "name": "reveal.js",
-  "version": "3.9.0",
+  "version": "3.9.1",
   "main": [
     "js/reveal.js",
     "css/reveal.css"

js/reveal.js

@@ -26,7 +26,7 @@
 	var Reveal;
 
 	// The reveal.js version
-	var VERSION = '3.9.0';
+	var VERSION = '3.9.1';
 
 	var SLIDES_SELECTOR = '.slides section',
 		HORIZONTAL_SLIDES_SELECTOR = '.slides>section',

package-lock.json

 {
   "name": "reveal.js",
-  "version": "3.9.0",
+  "version": "3.9.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

 {
   "name": "reveal.js",
-  "version": "3.9.0",
+  "version": "3.9.1",
   "description": "The HTML Presentation Framework",
   "homepage": "http://revealjs.com",
   "subdomain": "revealjs",