* APSL/thumbor is not actively maintained and doesn't have the latest versions
* [MinimaCompact](https://github.com/MinimalCompact/thumbor) is actively maintained and works closely with the thumbor core team
* This change switches to use minimalcompact and also upgrades the default version to the latest
* Note: not sure if it's worth hard-coding an explicit version `6.7.0` or use the `latest` tag?
7c6e85b0a4