Add develop branch
We now merge directly into master. Since we want master to be working at all time, this means:
- Every merge needs to be fully tested
- big chance of breaking things in master if bugs do slip through the net
Having a develop branch could help here because you can limit testing specific to the feature that's added/bug that's fixed. Every now and then develop can be merged into master after a full run of the script.
This worklow should be added to the README.md