Remove duplicate preconnections

Author: csswizardry

_includes/head.html

@@ -23,13 +23,11 @@
 {% if page.layout != "feature" %}
 <link rel="preconnect" href="//cdn.carbonads.com">
 <link rel="preconnect" href="//srv.carbonads.net">
-<link rel="preconnect" href="//platform.twitter.com">
 <link rel="preconnect" href="https://platform.twitter.com">
 <link rel="preconnect" href="https://syndication.twitter.com">
 <link rel="preconnect" href="https://cdn.syndication.twimg.com">
 {% endif %}
 
-<link rel="preconnect" href="//www.google-analytics.com">
 <link rel="preconnect" href="https://www.google-analytics.com">
 
 <style>

sw.js

@@ -1,4 +1,4 @@
-var cacheName = 'csswizardry:0022';
+var cacheName = 'csswizardry:0023';
 var cacheFiles = [
   '/',
   '/about/',
@@ -53,7 +53,7 @@ self.addEventListener('fetch', function(event) {
 // Empty out any caches that don’t match the ones listed.
 self.addEventListener('activate', function(event) {
 
-  var cacheWhitelist = ['csswizardry:0022'];
+  var cacheWhitelist = ['csswizardry:0023'];
 
   event.waitUntil(
     caches.keys().then(function(cacheNames) {