feat(draft3): add support for draft3

incorporate all feedback

fixes #268

content/draft3/_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/_index.markdown

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+---
+title: "Core"
+summary: "This vocabulary defines JSON Schema core terminology and mechanisms; related specifications build upon this specification and define different applications of JSON Schema."
+specification: "https://json-schema.org/draft-03/draft-zyp-json-schema-03"
+authors:
+  - github: kriszyp
+    first: Kris
+    last: Zyp
+  - github: garycourt
+    first: Gary
+    last: Court
+uri: "https://json-schema.org/draft-03/draft-zyp-json-schema-03"
+metaschema: "http://json-schema.org/draft-03/schema#"
+official: true
+default: true
+mandatory: true
+index: -99999
+---

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
+---

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
+---