5/6/2005 - 0.5:
add_contact() now exports home/mobile/work phone, organization, title, birthday, multiple work/home/mobile email addresses, AIM Home/Work IM address
Added new RevolutionException type; methods raise this now rather than returning NULL.
3/30/2005 - 0.4:
Added mutators to all attributes
Added add_contact, delete_contact, get_contacts_by_name, get_contact_by_uid
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