Special thank you to @camsaul for prompting a couple of these. The CI/testing changes mean that MySQL, MariaDB, and SQL Server are all tested as part of every change to the repo (instead of just when I remembered to run them locally!). The bump from 1.2.x to 1.3.x reflects dropping support for JDK 8 and updating most of the JDBC drivers being tested (since several of them were older due to retaining JDK 8 support).