Mistake in Data Package schema

[martonvago]

Found a mistake in the foreign key bit of the DP schema here (I think).

Current:

"properties": {
  "fields": {
    "type": "array",
    "items": {
      "type": "string",
      "minItems": 1,
      "uniqueItems": true,
      "description": "Fields that make up the primary key."
    }
  }, ...

Should be:

"properties": {
  "fields": {
    "type": "array",
    "items": {
      "type": "string",
      "description": "Fields that make up the primary key."
    },
    "minItems": 1,
    "uniqueItems": true
  }, ...

So minItems and uniqueItems should be declared one level higher, otherwise they have no effect.