Added timestamp to generated css file link to fix Safari css refresh.

assets/templates/meta.pug

@@ -17,7 +17,8 @@ head
 	meta(name="msapplication-TileColor", content="#00aba9")
 	meta(name="theme-color", content="#ffffff")
 	
+	- var timestamp = Math.floor(Date.now() / 10000)
 	link(rel="stylesheet", href=site_root + "assets/style/normalize.css")
-	link(rel="stylesheet", href=site_root + "assets/style/main.css")
+	link(rel="stylesheet", href=site_root + "assets/style/main.css?v=" + timestamp)
 
 	script(src="https://code.iconify.design/1/1.0.6/iconify.min.js")