v0.22

    * FEATURE: Allow optional calendar field in ~/.idonethisrc
               (Courtesy @norbu09, GH #15)

    * FEATURE: Logins with email addresses (as well as user-names)
               are now handled. (GH #11)

    * BUGFIX: More robust handling of finding calnedar links.
              We now fall-back to the 'personal' calendar if no
              other links are found.