Cache busting for css.

Author: benserrette

src/_includes/base_template.hbs

@@ -6,7 +6,7 @@
         <title>{{ title }}</title>
         <meta name="description" content="Ben Serrette's professional homepage - Web developer, tech leader, and digital creator.">
         <meta name="author" content="Ben Serrette">
-        <link rel="stylesheet" href="assets/main.css?v=3">
+        <link rel="stylesheet" href="assets/main.css?v=4">
 
         <link rel="icon" href="favicon-32x32.png" type="image/png">
         <link rel="shortcut icon" href="favicon.ico" type="image/x-icon">