v5.2.0

#362 (package:// URIs and bundle local copy of the spec schemas)
#372 (bugfix for issue #371)
#378 (bugfix for #376, add provided schema under a dummy URI)
#382 (add quiet / verbose options to CLI script)
#383 (add CHECK_MODE_DISABLE_FORMAT)
#366 (more unit tests)
#389 (allow assoc array as schema)
#398 (enable FILTER_FLAG_EMAIL_UNICODE if available)
#394 (anyOf / oneOf exceptions - bugfix for #393)
#365 (default recursion & bugfixes for #359 & #377, refactor defaults, other minor fixes)
#357 (schema validation)
#400 (remove stale files from #357)