John A. De Goes

We will take a PR for ZIO 1.x issues, of course, but we will need a volunteer to fix this issue.

This ticket needs to be updated to reflect which validators have already been implemented, and which remain.

@kaf-lamed-beyt The build is failing on all platforms. Can you take a look and ping me when everything is passing? Thank you!

/bounty $150

/bounty $250 for fix and test to accompany it.

/bounty $100

/bounty $100

@vigoo Is this already done?

I'm onboard with this, conceptually. However, we do have some issues to resolve: 1. Many formats have explicit support for `Option` (e.g. nullable columns in SQL, optional fields in protobuf,...

/bounty $250