What's new in Neatline 2.2.4?

I'm running Neatline 2.2.1 and wanted to find out what's new in 2.2.4. How do I find out? What happened to version 2.2.2?

2.2.4 is 2.2.2 with some build fixes. See https://github.com/scholarslab/Neatline/releases

Thanks!