Fix tutorial and issue #209

docs/source/Start here.rst

@@ -102,7 +102,7 @@ Now we need to tell `geomeppy` to match up our surfaces with the correct outside
 
 Last step, let's add some nice big windows. We'll set window to wall ratio (WWR) of 0.6 for all external walls.
 
-    >>> idf.set_wwr(0.6)
+    >>> idf.set_wwr(0.6, construction="Project External Window")
 
 So what have we built? We can export the IDF geometry as an OBJ file, a format that can be imported into a 3D geometry viewer.
 

geomeppy/geom/polygons.py

@@ -1,5 +1,5 @@
 """Heavy lifting geometry for IDF surfaces."""
-from collections import MutableSequence
+from collections.abc import MutableSequence
 from itertools import product
 from math import atan2, pi
 from typing import Any, List, Optional, Tuple, Union  # noqa