feat(draft3): add support for draft3

incorporate all feedback

fixes #268

content/draft3/core/_index.markdown

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+---
+title: "Draft 3"
+description: "A JSON Media Type for Describing the Structure and Meaning of JSON Documents"
+summary: "JSON Schema Draft 3 is a JSON media type that provides a contract for what JSON data is required for a given application and how to interact with it. JSON Schema is intended to define validation, documentation, hyperlink navigation, and interaction control of JSON data."
+organization: JSON Schema
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03"
+index: -99
+authors:
+  - github: kriszyp
+    first: Kris
+    last: Zyp
+  - github: garycourt
+    first: Gary
+    last: Court
+metaschema: "http://json-schema.org/draft-03/schema#"
+year: 2010
+bowtie: "https://bowtie.report/#/dialects/draft3"
+---

content/draft3/core/additionalItems.markdown

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+---
+keyword: "additionalItems"
+signature: "Schema | Boolean"
+value: This keyword must be set to a valid JSON Schema
+summary: "If [`items`](/draft3/validation/items) is set to an array of schemas, validation succeeds if each element of the instance not covered by it validates against this schema. If set to a boolean, no additional items are allowed in the array instance."
+kind: [ "applicator" ]
+instance: [ "array" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.6"
+metaschema: "http://json-schema.org/draft-03/schema#"
+default:
+  value: "{}"
+tests:
+  - draft3/additionalItems.json
+index: -98
+introduced_in: draft3
+interdependencies:
+  - vocabulary: core
+    keyword: items
+  - vocabulary: core
+    keyword: minItems
+  - vocabulary: core
+    keyword: maxItems
+related:
+  - vocabulary: core
+    keyword: uniqueItems
+---

content/draft3/core/additionalProperties.markdown

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+---
+keyword: "additionalProperties"
+signature: "Schema | Boolean"
+value: This keyword must be set to a valid JSON Schema
+summary: "Validation succeeds if the schema validates against each value not matched by other object applicators in this vocabulary. If set to a boolean, no additional properties are allowed in the instance."
+kind: [ "applicator" ]
+instance: [ "object" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.4"
+metaschema: "http://json-schema.org/draft-03/schema#"
+tests:
+  - draft3/additionalProperties.json
+default:
+  value: "{}"
+introduced_in: draft1
+index: -4
+interdependencies:
+  - vocabulary: core
+    keyword: properties
+  - vocabulary: core
+    keyword: patternProperties
+related:
+  - vocabulary: core
+    keyword: dependencies
+  - vocabulary: core
+    keyword: required
+  - vocabulary: core
+    keyword: minProperties
+  - vocabulary: core
+    keyword: maxProperties
+---

content/draft3/core/default.markdown

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+---
+keyword: "default"
+signature: "Any"
+value: This keyword must be set to a JSON value, preferrably that successfully validates against the corresponding subschema
+summary: "This keyword can be used to supply a default JSON value associated with a particular schema."
+kind: [ "annotation" ]
+instance: [ "any" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.20"
+metaschema: "http://json-schema.org/draft-03/schema#"
+tests:
+  - draft3/default.json
+introduced_in: draft1
+index: 9996
+related:
+  - vocabulary: core
+    keyword: title
+  - vocabulary: core
+    keyword: description
+---

content/draft3/core/dependencies.markdown

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+---
+keyword: "dependencies"
+signature: "Object<String, Array<String> | Schema>"
+value: This keyword must be set to an object where each value is either an array of unique strings or a valid JSON Schema
+summary: "Validation succeeds if, for each name that appears in both the instance and as a name within this keyword's value, either every item in the corresponding array is also the name of a property in the instance or the corresponding subschema successfully evaluates against the instance."
+kind: [ "assertion" ]
+instance: [ "object" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.8"
+metaschema: "http://json-schema.org/draft-03/schema#"
+default:
+  value: "{}"
+index: -3
+tests:
+  - draft3/dependencies.json
+introduced_in: draft3
+related:
+  - vocabulary: core
+    keyword: required
+---

content/draft3/core/description.markdown

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+---
+keyword: "description"
+signature: "String"
+value: This keyword must be set to a string
+summary: "An explanation about the purpose of the instance described by the schema."
+kind: [ "annotation" ]
+instance: [ "any" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.22"
+metaschema: "http://json-schema.org/draft-03/schema#"
+introduced_in: draft1
+index: 9995
+related:
+  - vocabulary: core
+    keyword: title
+  - vocabulary: core
+    keyword: default
+---

content/draft3/core/disallow.markdown

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+---
+keyword: "disallow"
+signature: "String | Array<String>"
+value: This keyword is opposite of the `type` keyword. If the instance is set to either a string that corresponds to one of the supported types, or any instance matching the values in a *non-empty* array of unique strings that correspond to one of the supported types, the instance is invalid
+summary: "Validation succeeds if the type of the instance does not match the type represented by the given type, or does not match at least one of the given types."
+kind: [ "assertion" ]
+instance: [ "any" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.25"
+metaschema: "http://json-schema.org/draft-03/schema#"
+default:
+  value: "[ \"null\", \"boolean\", \"object\", \"array\", \"number\", \"string\", \"any\"]"
+tests:
+  - draft3/disallow.json
+index: -99999
+introduced_in: draft1
+removed_in: draft4
+---

content/draft3/core/divisibleBy.markdown

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+---
+keyword: "divisibleBy"
+signature: "Number"
+value: This keyword must be set to a number that is not equal to zero
+summary: "A numeric instance is valid only if division by this keyword's value results in an integer."
+kind: [ "assertion" ]
+instance: [ "number" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.24"
+metaschema: "http://json-schema.org/draft-03/schema#"
+default:
+  value: 1
+tests:
+  - draft3/divisibleBy.json
+introduced_in: draft3
+removed_in: draft4
+changed_in: draft4
+index: -9999
+related:
+  - vocabulary: core
+    keyword: exclusiveMaximum
+  - vocabulary: core
+    keyword: exclusiveMinimum
+  - vocabulary: core
+    keyword: maximum
+  - vocabulary: core
+    keyword: minimum
+---

content/draft3/core/enum.markdown

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+---
+keyword: "enum"
+signature: "Array<Any>"
+value: This keyword must be set to a *non-empty* array of unique JSON values
+summary: "Validation succeeds if the instance is equal to one of the elements in this keyword's array value."
+kind: [ "assertion" ]
+instance: [ "any" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.19"
+metaschema: "http://json-schema.org/draft-03/schema#"
+tests:
+  - draft3/enum.json
+introduced_in: draft1
+index: -99998
+related:
+  - vocabulary: core
+    keyword: type
+  - vocabulary: core
+    keyword: extends
+---

content/draft3/core/exclusiveMaximum.markdown

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+---
+keyword: "exclusiveMaximum"
+signature: "Boolean"
+value: This keyword must be set to a boolean value
+summary: "When [`maximum`](/draft3/validation/maximum) is present and this keyword is set to true, the numeric instance must be less than the value in [`maximum`](/draft3/validation/maximum)."
+summary: "Validation succeeds if the numeric instance is less than the given number."
+kind: [ "assertion" ]
+instance: [ "number" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.12"
+metaschema: "http://json-schema.org/draft-03/schema#"
+default:
+  value: "false"
+tests:
+  - draft3/maximum.json
+  - draft3/optional/bignum.json
+introduced_in: draft3
+changed_in:
+  - draft6
+index: -9997
+affects:
+  - vocabulary: core
+    keyword: maximum
+related:
+  - vocabulary: core
+    keyword: exclusiveMinimum
+  - vocabulary: core
+    keyword: maximum
+  - vocabulary: core
+    keyword: minimum
+  - vocabulary: core
+    keyword: divisibleBy
+---
+
+## Examples
+
+{{<schema `Schema with 'exclusiveMaximum' keyword`>}}
+{
+  "$schema": "http://json-schema.org/draft-03/schema#",
+  "type": "number",
+  "maximum": 3.0,
+  "exclusiveMaximum: true
+}
+{{</schema>}}
+
+{{<instance-pass `A numeric instance less than the maximum with the exclusiveMaximum keyword defined is valid`>}}
+2.2
+{{</instance-pass>}}
+
+
+{{<instance-fail `A numeric instance greater than or equal to the maximum with the exclusiveMaximum keyword defined is invalid`>}}
+3.0
+{{</instance-fail>}}

content/draft3/core/exclusiveMinimum.markdown

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+---
+keyword: "exclusiveMinimum"
+signature: "Boolean"
+value: This keyword must be set to a boolean value
+summary: "When [`minimum`](/draft3/validation/minimum) is present and this keyword is set to true, the numeric instance must be greater than the value in [`minimum`](/draft3/validation/minimum)."
+kind: [ "assertion" ]
+instance: [ "number" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.11"
+metaschema: "http://json-schema.org/draft-03/schema#"
+default:
+  value: "false"
+tests:
+  - draft3/minimum.json
+  - draft3/optional/bignum.json
+introduced_in: draft3
+changed_in:
+  - draft6
+index: -9995
+affects:
+  - vocabulary: core
+    keyword: minimum
+related:
+  - vocabulary: core
+    keyword: exclusiveMaximum
+  - vocabulary: core
+    keyword: maximum
+  - vocabulary: core
+    keyword: minimum
+  - vocabulary: core
+    keyword: divisibleBy
+---
+
+## Examples
+
+{{<schema `Schema with 'exclusiveMinimum' keyword`>}}
+{
+  "$schema": "http://json-schema.org/draft-03/schema#",
+  "type": "number",
+  "minimum": 1.1,
+  "exclusiveMinimum: true
+}
+{{</schema>}}
+
+{{<instance-pass `A numeric instance greater than the minimum with the exclusiveMinimum keyword defined is valid`>}}
+1.2
+{{</instance-pass>}}
+
+{{<instance-fail `A numeric instance less than or equal to the minimum with the exclusiveMinimum keyword defined is invalid`>}}
+1.1
+{{</instance-fail>}}

content/draft3/core/extends.markdown

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+---
+keyword: "extends"
+signature: "URI Reference | Schema | Array<Schema>"
+value: This keyword must be set to either a schema, a list of schemas, or a URI that points to a schema
+summary: "Validation succeeds if the instance is valid against the schema or schemas defined by this keyword"
+kind: [ "applicator" ]
+instance: [ "any" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.26"
+metaschema: "http://json-schema.org/draft-03/schema#"
+default:
+  logical_value: "[]"
+tests:
+  - draft3/extends.json
+index: 6
+introduced_in: draft1
+removed_in: draft4
+related:
+  - vocabulary: core
+    keyword: enum
+---

content/draft3/core/format.markdown

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+---
+keyword: "format"
+signature: "String"
+value: This keyword must be set to a string, preferrably one that is standardized by JSON Schema to ensure interoperability
+summary: "Define semantic information about a string instance."
+kind: [ "annotation" ]
+instance: [ "string" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.23"
+metaschema: "http://json-schema.org/draft-03/schema#"
+tests:
+  - draft3/format.json
+introduced_in: draft1
+index: 97
+changed_in:
+  - draft3
+  - draft4
+---

content/draft3/core/id.markdown

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+---
+keyword: "id"
+signature: "URI Reference"
+value: This keyword may be set to an absolute URI or a relative reference
+summary: "This keyword declares an identifier for the schema resource."
+kind: [ "identifier" ]
+instance: [ "any" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.27"
+metaschema: "http://json-schema.org/draft-03/schema#"
+tests:
+index: -999
+introduced_in: draft3
+affects:
+  - vocabulary: core
+    keyword: $ref
+related:
+  - vocabulary: core
+    keyword: $schema
+---

content/draft3/core/items.markdown

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+---
+keyword: "items"
+signature: "Schema | Array<Schema>"
+value: This keyword must be set to a valid JSON Schema or to a *non-empty* array, where each item is a valid JSON Schema
+summary: "If set to a schema, validation succeeds if each element of the instance validates against it. If set to an array, validation succeeds if each element of the instance validates against the schema at the same position, if any."
+kind: [ "applicator" ]
+instance: [ "array" ]
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03.pdf#5.5"
+metaschema: "http://json-schema.org/draft-03/schema#"
+default:
+  value: "{}"
+tests:
+  - draft3/items.json
+introduced_in: draft1
+index: -99
+interdependencies:
+  - vocabulary: core
+    keyword: minItems
+  - vocabulary: core
+    keyword: maxItems
+affects:
+  - vocabulary: core
+    keyword: additionalItems
+related:
+  - vocabulary: core
+    keyword: additionalItems
+  - vocabulary: core
+    keyword: uniqueItems
+---