patternProperties are not additionalProperties in draft3 either.
patternProperties are not additionalProperties in draft3 either.

json-schema-org/JSON-Schema-Test-Suite,atomiqio/json-schema-test-suite,Relequestual/JSON-Schema-Test-Suite,WHenderson/ex-json-schema,atomiqio/json-schema-test-suite,neomadara/JSON-Schema-Test-Suite,WHenderson/ex-json-schema,epoberezkin/JSON-Schema-Test-Suite,epoberezkin/JSON-Schema-Test-Suite,moander/JSON-Schema-Test-Suite,json-schema/JSON-Schema-Test-Suite,mafintosh/JSON-Schema-Test-Suite