Using a fresh install of version 2.5 (latest build from last week). I'm attempting to extend a renderer within my custom theme (based off the 'clean' theme). I want to change an "h3" tag within the Available Courses display box to an "h5" tag. Should be super-easy, right? For some reason, once I set up my renderer, I get no errors, everything displays properly, but my changes are not displayed. I'm fairly sure I've got something very obvious wrong, but I've been messing with this for hours and I can't see it. I have tried purging my caches multiple times. My previous-install (2.4.3+) I had a renderer in the theme, and that is no longer working in 2.5, so I'm wondering if something changed between versions that I'm just not catching. Any help is much appreciated.
I've uploaded a txt file containing my code.