Thanks for fixing the plugin @awesomerobot, and including the option to remove underscores 
I just tested a commit in my fork to capitalize tags, it works with formattedTagName. Although I’m not sure how this would work with formattedAdditionalTagNames. But in any case I already notice an issue. Some tags are acronyms, such as PDF. Just capitalizing the first letter doesn’t look right. Of course a list of tags could be inserted to include words like PDF and others and then treat those differently and do toUpperCase() them fully. But for instances that allow community members to create tags, that becomes difficult to keep consistent. So I guess I’ll just leave tags as they are, lowercase. Unless there are smarter solutions?