I'm working on a 'usage' doc for this feature, I can either put it here or in another PR as the reviewer prefers :)

Why does the column name start with an underscore?

Never mind, because "milestones" is a property that does the json encoding/decoding.

How aboust instead just doing:
if self._milestones: return json.loads(self._milestones)
else: return {} ?

Creating a new item is a success? :-)

Apparently :)

I'm working on a 'usage' doc for this feature, I can either put it here or in another PR as the reviewer prefers :)

Ok I'll bring it in another PR as there are more changes to do there.

Ack.

Thanks :)