[MRELEASE-1115] Upgrade Parent to 39

[michael-o]

This closes #105

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[nielsbasjes]

Big change!
Looks like this changes the coding standard?

[michael-o]

Big change! Looks like this changes the coding standard?

Correct, we have internally agreed to use a newer formatting standard to get rid of those old-style formattings. I will merge in a few minutes since all checks have passed.