Add a terrible maze generation algorithm to test if a maze style map looks/feels better. The walls are disabled so you can walk around.

matrix.cpp

@@ -19,6 +19,8 @@ namespace matrix {
         print("{:x}<", cell);
       } else if(cell == WALL_PATH_LIMIT) {
         print("# ");
+      } else if(cell == 0) {
+        print(". ");
       } else if(cell > 15 && cell < 32) {
         print("{:x}+", cell - 16);
       } else if(cell > 31) {