Google Doc about the Contributors' Summit

[Johannes Schindelin]

Hi team,

I just started typing stuff up in a Google Doc, and made it editable to
everyone, feel free to help and add things:

https://docs.google.com/document/d/1KDoSn4btbK5VJCVld32he29U0pUeFGhpFxyx9ZJDDB0/edit?usp=sharing

Ciao,
Johannes