* Updated `linkedin-messaging` to
  [v0.3.0](https://github.com/sumnerevans/linkedin-messaging-api/releases/tag/v0.3.0).
* Handle redactions to/from LinkedIn. (#18, #32, #37, #38)
* Handle real-time reactions to/from LinkedIn. (#19, #31, #32)
* Enabled sending app-service bot delivery receipts to the chat.
* Fixed `reaction` database table primary key to support multiple reactions per
  user, per message.