Upgrading to Numbas 2.0 from an earlier version is a straightforward process, but can take a long time and disk space if you have a very large database.
Follow the instructions below, using a shell in your numbas_editor directory.
editor/templates/index.html - Numbas 2.0 looks for your custom welcome message in editor/templates/index_message.html.
git pull
pip install --upgrade -r numbas/requirements.pip
python manage.py migrate
editor/templates/index_message.html.dist to editor/templates/index_message.html, and customise to your liking.
That's it!
If you have any problems, email numbas@ncl.ac.uk.