MAJOR CHANGE! PLEASE READ!

This release changes the default database from mariadb to sqlite.

If you were previously using mariadb, you MUST add the following to your config:

  COMPOSE_FILE="$COMPOSE_FILE:compose.mariadb.yml"
  USE_MARIADB=true

If you want to migrate to using sqlite, you can export all posts before upgrading, then import all
posts after upgrading.