dijkstra is now bleching fast

deleting from the grid is now bleaching fast
added new helper methods
many new test-cases
many new methods for geo classes and others
added a bunch of new grid-walkers

floorplan/PlatformStair.h

@@ -0,0 +1,17 @@
+#ifndef PLATFORMSTAIR_H
+#define PLATFORMSTAIR_H
+
+#include "Stair.h";
+
+
+class PlatformStair {
+
+	Stair s1;
+
+	BBox2 platform;
+
+	Stair s2;
+
+};
+
+#endif // PLATFORMSTAIR_H