Python version of utilities.

installation

Check utilitiespy/dist for latest version info. Typically you need something like this in your requirements.txt

https://tracinsy.ewi.tudelft.nl/pubtrac/Utilities/export/314/utilitiespy/dist/utilities-1.0.5.tar.gz

and this in your install_requires in setup.py: "utilities@https://tracinsy.ewi.tudelft.nl/pubtrac/Utilities/export/314/utilitiespy/dist/utilities-1.0.5.tar.gz"

immutablelist

This is a partial translation of the java immutablelist.