History for RFC822Message

??changed:
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I've been wondering on whether or not to add a
meta_type of RFC822Address.. Thing is, when instansiating RFC822Message objects, we need to
store the various address fields, (obviously).  Now, because the fields To, Reply-To, Cc (and possibly others) use a similar format and structure for the values (email adresses, comments and realname), we might as well use a similar class to handle all of them.  As of today, the fields are stored in a lines type, which will require that we 3-step (['realname', 'comment', 'someuser@somehost]) the storage..

In other words, is this issue big enough so that it requires its own class?