This is amazing! As someone who reads avidly in multiple languages in addition to English, this is going to make my life so much easier. Perhaps even more importantly the fact that we don't have to delete the css file manually just to fix the font size issue is going to be a great help! Thanks so much.
It really is great that the community has really stepped up to help each other out, instead of having to wait on Kobo to very slowly react to these issues we've all encountered!