In this release, we introduced a new Advanced Search function to Tagger. This feature will allow users to search through contents of files' tags to find properties that are empty or contain a certain value. This feature can be activated simply by typing ! in the search box (You will see a button appear to the right of the text box in which you can click for more information).
Tagger will also now remember user-filled tag properties waiting to be applied and all unapplied changes can be easily discarded with the new Discard Unapplied Changes action. We've also fixed issues with ogg/opus files and improved the ux.
Full Changelog