A: Thanks for raising this. The changelog was quite out of date because I've spent the last 6 months working on a separate development branch focused on Gutenberg integration (my plan is to extend this to Greenshift too btw). I released a beta of the new Gutenberg integration last week. The following video explains how it works:

https://themeover.com/gutenberg-responsive-css-using-microthemer/

And I've now updated the changelog to reflect the updates in the beta release:

https://themeover.com/microthemer-changelog-7-x/

Thanks,
Sebastian