NODE-3449: Add serverConnectionId to Command Monitoring Spec (735f7aa)
NODE-3470: retry selects another mongos (#3963) (84959ee)
NODE-3689: require hello command for connection handshake to use OP_MSG disallowing OP_QUERY (#3938) (ce7df0f)
NODE-4686: Add log messages to CLAM (#3955) (e3bfa30)
NODE-4687: Add logging to server selection (#3946) (7f3ce0b)
NODE-4719: add SDAM Logging Spec (#3940) (a3c0298)
NODE-4847: Add config error handling to logging (#3970) (8f7bb59)
NODE-5717: make ExceededTimeLimit retryable reads error (#3947) (106ab09)
NODE-5885: upgrade BSON to ^6.3.0 (#3983) (9401d09)
NODE-5939: Implement 6.x: cache the AWS credentials provider in the MONGODB-AWS auth logic (#3991) (e0a37e5)
NODE-5978: upgrade BSON to ^6.4.0 (#4007) (90f2f70)

NODE-5127: implement reject kmsRequest on server close (#3964) (568e05f)
NODE-5609: node driver omits base64 padding in sasl-continue command (#3975) (b7d28d3)
NODE-5765: change type for countDocuments (#3932) (22cae0f)
NODE-5791: type error with $addToSet in bulkWrite (#3953) (b93d405)
NODE-5818: Add feature flagging to server selection logging (#3974) (55203ef)
NODE-5839: support for multibyte code-points in stringifyWithMaxLen (#3979) (aed1cf0)
NODE-5840: heartbeat duration includes socket creation (#3973) (a42039b)
NODE-5901: propagate errors to transformed stream in cursor (#3985) (ecfc615)
NODE-5944: make AWS session token optional (#4002) (f26de76)

NODE-5771: improve new connection (#3948) (a4776cf)
NODE-5854: Conditional logger instantiation and precompute willLog perf fix (#3984) (a63fbc2)
NODE-5928: consolidate signal use and abort promise wrap (#3992) (38742c2)