Formats on Formats (release candidate)

What's Changed

• Adds missing contentMediaType and contentEncoding properties to JSONSchema.string() convenience constructor functions (#334)
• Adds a few more builtin content types I was surprised to have not included already (#335)
• JSON Schema String Format Updates (#337)

Breaking Changes

There are no breaking changes to the OpenAPIKit30 module. The following all apply to the OpenAPIKit module.

• There is no longer .extended formats for .string JSON Schemas. Instead, all existing .extended formats are now just regular .string formats (e.g. you can just replace .extended(.uuid) with .uuid).
• There are no longer .byte or .binary formats for .string JSON Schemas. Instead, use the contentEncodings of .base64 and .binary, respectively.
• The .uriReference .extended JSON Schema .string format used to serialize to uriref whereas the new .uriReference JSON Schema .string format serializes to uri-reference, per the JSON Schema standard.
• The new builtin ContentTypes will not compare equally to custom types created previously (e.g. ContentType.gif is not equal to ContentType.other("image/gif"). If you need such things to compare equally, compare their .rawValue properties.

Full Changelog: 3.0.0-rc.3...3.0.0-rc.4