Renamed the project to Umbraco.PublishedCache.NuCache - and move non NuCache related stuff to abstractions and infrastructure.

src/Umbraco.PublishedCache.NuCache/Navigable/INavigableData.cs

@@ -0,0 +1,11 @@
+using System.Collections.Generic;
+using Umbraco.Core.Models.PublishedContent;
+
+namespace Umbraco.Web.PublishedCache.NuCache.Navigable
+{
+    internal interface INavigableData
+    {
+        IPublishedContent GetById(bool preview, int contentId);
+        IEnumerable<IPublishedContent> GetAtRoot(bool preview);
+    }
+}