NOTE: Versioning

Collecting learnings from versioning (data models)

Slides from WISHI calls:

• https://github.com/t2trg/wishi/blob/master/slides/2019-11-07-versions.pdf
• https://github.com/t2trg/wishi/blob/master/slides/2020-02-20-versions-numbers.pdf
• https://github.com/t2trg/wishi/blob/master/slides/2019-12-17%20Data%20Model%20Evolution%20and%20Versioning.pdf