v2.0-rc2

- Minor: Reimplemented channel MOTDs. (#10)
- Minor: Added a way to subscribe to all events at once with `!notifyme all`.
- Minor: List all available events in `!notifyme` command.
- Minor: Reimplemented respecting of disabled command.
- Minor: Make periodic requests to supinic's API to signal bot being alive. (#6)
- Bugfix: Corrected response in `!bot` command.
- Bugfix: Make checks for subscription values case-insensitive again.
- Dev: Use millisecond precision in logs.
- Dev: Added licese. (#7)
- Dev: Cleaned up code for API routes.

- Initial release.