Release 0.4.0

Added

• Send a Fedora Messaging message when a cookie is given #20

Changed

• Changed the !oncall command (and associated subcommands) to !infra oncall. Additionally, added
  the new !infra oncall list command that returns the list of sysadmins that are on call, and this
  command is now aliased to !oncall #26
• added additional information to pagure ticket commands, including assignee, ticket close status, and dates of opening, modification, and closure. #39
• the component of a bugzilla bug is now included in the reply when using the !bug command.
  For example, previously where the reply was RHBZ#2245223: Please update to 4.6.0 the !bug command
  will return RHBZ#2245223: [python-pebble]: Please update to 4.6.0 #44
• When gifting a cookie, the bot responds with "1 cookie" or "2 cookies"
  instead of "1 cookie(s)" or "2 cookie(s)". #36

Fixed

• Don't allow users to give cookies to themselves #16