1.8.4: History received a fix for startup issue, increased entry size, and context menu options

- Set selection active in history is now a toggleable feature in the context menu
- Increased number of entries in history from 32 to 64
- Clear entries moved to context menu in history
- Fixed issue, where history didn't work on first startup

Editor/History/Utilities/EditorHistoryUtility.cs

@@ -0,0 +1,37 @@
+using System.Collections.Generic;
+
+namespace Module.NavigationTool.Editor.History
+{
+    internal static class EditorHistoryUtility
+    {
+        private static EditorHistoryList EDITOR_HISTORY_LIST;
+
+        static EditorHistoryUtility()
+        {
+            EDITOR_HISTORY_LIST = null;
+        }
+        
+        public static EditorHistoryList GetHistoryList()
+        {
+            return EDITOR_HISTORY_LIST ?? (EDITOR_HISTORY_LIST = new EditorHistoryList());
+        }
+
+        public static bool IsLoaded()
+        {
+            return EDITOR_HISTORY_LIST != null;
+        }
+
+        public static void RefreshAll()
+        {
+            if (EDITOR_HISTORY_LIST == null)
+                return;
+
+            List<EditorHistoryList.Entry> entries = EDITOR_HISTORY_LIST.entries;
+
+            for (var i = 0; i < entries.Count; i++)
+            {
+                entries[i].Refresh();
+            }
+        }
+    }
+}