v2.21.0 * switch to mypy 1.0 * api: deprecate `setup_psycopg2_errorhandlers` * api: define `exception_status_codes` class attribute of `RPCServerApp` * api: return 503 instead of 500 on KafkaDeliveryError
staging instance, all data can be removed at all time
v2.21.0 * switch to mypy 1.0 * api: deprecate `setup_psycopg2_errorhandlers` * api: define `exception_status_codes` class attribute of `RPCServerApp` * api: return 503 instead of 500 on KafkaDeliveryError