Parse and format RFC 2822 email addresses and groups
Description
This module implements RFC 2822 parser and formatter of email addresses and
groups. It parses an input string from email headers which contain a list
of email addresses or a groups of email addresses (like From, To, Cc, Bcc,
Reply-To, Sender, ...). Also it can generate a string value for those
headers from a list of email addresses objects.
