"tuple" type declaration of "properties" is problematic

[clemensv]

The properties declaration is reused for the tuple type. That's an issue because the tuple is ordered and the properties declaration is an object where keys are unordered.

I do like preserving the same declaration style as for object combined with the terseness of the encoding in an array.

Noting this as an issue while pondering the options.

[clemensv]

Fix will be an ordering array that references the properties. The tuple still defines a data structure with property names such that it can be easily mapped to an object in a programming language or database.

{
  "type": "tuple",
  "name": "Person",
  "properties": {
    "name": { "type": "string" },
    "age": { "type": "int32" }
  },
  "tuple": ["name", "age"]
}