Maze gen can now more efficiently produce an interesting map that is fully pathable.

src/algos/maze.hpp

@@ -40,5 +40,7 @@ namespace maze {
     bool room_should_exist(Room& room, bool allow_dupes=false);
     void make_doors();
     bool validate();
+    bool repair();
+    void punch_dead_end(size_t at_x, size_t at_y, size_t x, size_t y);
   };
 }