Gets in-memory runtime minifiy cache working, ensures no files can be accessed at the root, adds config to enable in-memory and configure a cache buster including a timestamp cache buster.

src/Umbraco.Core/WebAssets/IRuntimeMinifier.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 
@@ -25,7 +25,7 @@ namespace Umbraco.Cms.Core.WebAssets
         /// <exception cref="InvalidOperationException">
         /// Thrown if any of the paths specified are not absolute
         /// </exception>
-        void CreateCssBundle(string bundleName, params string[] filePaths);
+        void CreateCssBundle(string bundleName, bool optimizeOutput, params string[] filePaths);
 
         /// <summary>
         /// Renders the html link tag for the bundle