Mail_fingerprint.of_email now accepts an additional compute_md5 parameter, allowing users to choose whether to compute the MD5 hash while creating a fingerprint from an emailSimplemail.For_testing module can be used in testing code to override the default server that mail is sent toEnvelope.of_email and Envelope_info.of_email now accept an additional ignore_unparseable_recipient_header parameter that causes the function to ignore unparseable headers rather than returning an errorCache module out to its own library: resource_cache. (available at https://github.com/janestreet/resource_cache )Client_simple.start rather than Log.Global.log in one spot.Moved from janestreet-alpha