Add support for the `iri` and `iri-reference` formats to the `format-nongpl` extra#1388

Julian merged 2 commits intopython-jsonschema:mainpython-jsonschema/jsonschema:mainfrom

jkowalleck:feat/validate_rfc3987_non-gpl/rfc3987-syntaxjkowalleck/fork_jsonschema:feat/validate_rfc3987_non-gpl/rfc3987-syntaxCopy head branch name to clipboard