[wgem] config: allowing to use a custom electron version

bauh/commons/util.py

@@ -0,0 +1,11 @@
+import collections
+
+
+def deep_update(source: dict, overrides: dict):
+    for key, value in overrides.items():
+        if isinstance(value, collections.Mapping) and value:
+            returned = deep_update(source.get(key, {}), value)
+            source[key] = returned
+        else:
+            source[key] = overrides[key]
+    return source