Merge branch "00-start-up" into "develop"
Summary of the merged in commits:
* bb2cfce: Add initial version of notebook 00
* f33af96: Add a simple .gitignore file
* d2fdda7: Add "develop" dependencies for the presenter
- the Jupyter notebooks are assumed to be run within an installation of
the Anaconda Distribution (version 2019-07 with Python 3.7.3) by the
students (assumed to be total beginners)
- for the presenter some special third-party libraries are added to
allow for executable code cells in presentation mode (via rise)
- black / blackcellmagic provide a convenient way to style the code
while working on the notebooks