Document intentionally unsupported features from draft-04 about doca

[handrews]

Other examples are complex situations such as

{
    "allOf": [
        {   
            "properties": {"foo": {}, "bar": {}},
            "additionalProperties": false
        },  
        {   
            "properties": {"foo": {}, "xyz": {}},
            "additionalProperties": false
        }   
    ]   
}

which is equivalent to

{
    "properties": {"foo": {}},
    "additionalProperties": false
}

but doing the schema algebra to work that out is nontrivial in the general case, particularly if there are nested structures, or actual schemas in "additionalProperties" instead of just false. In general, "additionalProperties" and "allOf" don't mix well.

[handrews]

I'm pretty sure we're not going to support "dependencies" as it's rarely used, poorly understood, and seems likely to be dumped in favor of "if"/"then"/"else" in draft-07.

[handrews]

This set of packages is being deprecated in favor of the JSON Schema Tools monorepo. Contributions are still welcome here but most work will be done on the new packages.

The new UI is still being designed, but hopefully we don't completely ignore any draft-04 features there.