python: improve init on windows

CSXCAD adds the dll path as needed on windows install version

Signed-off-by: Thorsten Liebig <liebig@imst.de>

python/openEMS/__init__.py

@@ -3,4 +3,7 @@
 # Shortcut openEMS import
 from __future__ import absolute_import
 
+# try to import CSXCAD, e.g. make sure the (windows) dll path are set
+import CSXCAD
+
 from openEMS.openEMS import openEMS