notebook update
Merge branch 'master' of https://github.com/nens/python-subgrid

* 'master' of https://github.com/nens/python-subgrid:
  Back to development: 0.12
  Preparing release 0.11
  pull from server
  Back to development: 0.11
  changes
  Preparing release 0.10
  bugfix str.rstrip
  culvert falende test
  Back to development: 0.10
  Preparing release 0.9
New notebook