New assertion to ensure version compatibility between PySDM and PySDM_examples (#1733)

Co-authored-by: Sylwester Arabas <sylwester.arabas@agh.edu.pl>

Author: olastrz

examples/PySDM_examples/__init__.py

@@ -3,9 +3,12 @@
 """
 
 from importlib.metadata import PackageNotFoundError, version
+import PySDM
 
 try:
     __version__ = version(__name__)
 except PackageNotFoundError:
     # package is not installed
     pass
+
+assert PySDM.__version__ == __version__