This commit removes DATABASE_URL variable in favour of a fixed name.
The project won’t panic anymore if this variable isn’t set. This
removes the need for dotenvy.
It also adds the necessary files to dockerize the application.
Update instructions in README on how to run the project.
Add possibility to compile the project without a database available.
Closes#8
This commit also allows in the database to hold more than one channel
per guild and introduces clippy linting.
Closes#2
BREAKING CHANGES: The database schema changed from its root. All
databases should be dropped and recreated before running this new
version.
