TECH TREES WHOO

Implemented procedural tech tree generation by porting GraphSharp to Unity.
Also, some database editor convenience changes.

Assets/Scripts/NIH/Graph#/IMutableCompoundGraph.cs

@@ -0,0 +1,11 @@
+using QuickGraph;
+
+namespace GraphSharp
+{
+    public interface IMutableCompoundGraph<TVertex, TEdge> 
+        : ICompoundGraph<TVertex, TEdge>,
+          IMutableBidirectionalGraph<TVertex, TEdge> 
+        where TEdge : IEdge<TVertex>
+    {
+    }
+}