sup-heliotrope/sup — pull request #257 by wkennington (2014-03-12 16:30:34+00:00)
Title: person: Don't downcase the email address

As per RFC 2821:
The local-part of a mailbox MUST BE treated as case sensitive.
Therefore, SMTP implementations MUST take care to preserve the case of
mailbox local-parts. Mailbox domains are not case sensitive. In particular,
for some hosts the user "smith" is different from the user "Smith".