monica_reminder v0.0.2

Added

• Reminder emails now include the date of the event in the body.
• We now clean up old state to prevent DATA_HOME growing forever. Anything older
  than 500 days as we should remember things we sent a bit over a year ago.

Removed

• Our dependency on msmtp is no longer needed. Now we use Monica's own
  mechanism to send email. This means no need to change your Monica
  system/container at all simplifying installation.