Protocol-agnostic SASL library for use with asyncio

 aiosasl provides a generic, asyncio-based SASL library. It can
 be used with any protocol, provided the necessary interface
 code is provided by the application or protocol implementation.
 .
 Supported SASL mechanisms:
 .
  - PLAIN: authenticate with plaintext password (RFC 4616)
  - ANONYMOUS: anonymous "authentication" (RFC 4505)
  - SCRAM-SHA-1, SCRAM-SHA-224, , SCRAM-SHA-512, SCRAM-SHA-384,
    and SCRAM-SHA-256: Salted Challenge Response Authentication
    (RFC 5802), (and the -PLUS variants with channel binding).