Fix format order issue in quadtree __str__

The text was incorrect (allowed and actual depth were swapped)

* pygorithm/data_structures/quadtree.py - fix __str__
* tests/test_data_structure.py - fix quadtree __str__ tests

Author: Tjstretchalot

pygorithm/data_structures/quadtree.py

@@ -547,7 +547,7 @@ def __str__(self):
         _max_depth = max(_ents_per_depth.keys())
         _avg_ent_leaf = self.calculate_avg_ents_per_leaf()
         _mispl_weight = self.calculate_weight_misplaced_ents(sum_entities=_sum)
-        return "quadtree(at {} with {} entities here ({} in total); (nodes, entities) per depth: {} (allowed max depth: {}, actual: {}), avg ent/leaf: {} (target {}), misplaced weight {} (0 best, >1 bad)".format(self.location, len(self.entities), _sum, _nodes_ents_per_depth_str, _max_depth, self.max_depth, _avg_ent_leaf, self.bucket_size, _mispl_weight)
+        return "quadtree(at {} with {} entities here ({} in total); (nodes, entities) per depth: {} (allowed max depth: {}, actual: {}), avg ent/leaf: {} (target {}), misplaced weight {} (0 best, >1 bad)".format(self.location, len(self.entities), _sum, _nodes_ents_per_depth_str, self.max_depth, _max_depth, _avg_ent_leaf, self.bucket_size, _mispl_weight)
 
     @staticmethod
     def get_code():

tests/test_data_structure.py

@@ -784,7 +784,7 @@ def cleanup(self2=self):
 
         self.addCleanup(cleanup)
         self.maxDiff = None
-        self.assertEqual("quadtree(at rect(100x100 at <0, 0>) with 0 entities here (2 in total); (nodes, entities) per depth: [ 0: (1, 0), 1: (4, 2) ] (allowed max depth: 1, actual: 5), avg ent/leaf: 0.5 (target 1), misplaced weight 0.0 (0 best, >1 bad)", str(_tree))
+        self.assertEqual("quadtree(at rect(100x100 at <0, 0>) with 0 entities here (2 in total); (nodes, entities) per depth: [ 0: (1, 0), 1: (4, 2) ] (allowed max depth: 5, actual: 1), avg ent/leaf: 0.5 (target 1), misplaced weight 0.0 (0 best, >1 bad)", str(_tree))
 
 if __name__ == '__main__':
     unittest.main()