Placement in Items

[m-mohr]

The specification says "renders" should be in Item Properties, but the examples and schema seem to have it on the top-level. I think it should in the Item Properties. All extensions extend the Item Properties, which is the best-practice.

[giorgiobasile]

Hi, just letting you know I just made #5 open for reviews. I'm not very skilled with JSON Schema but I'd be happy to contribute :)

[emmanuelmathot]

Just reviewed. We will need a version 2 as it is a breaking change.