This was quite a challenge... I've got STEP_Core-2.10.0 and STEP_Core_Finalize-2.10.0 in the repository now, but they won't work properly with anything below StepperUpper 220.127.116.11 (also in the repository, but I haven't released it yet). One of the neat things it does is it calculates the proper FOV value for you based on the screen resolution you plug in.
I'm going to make sure that STEP_Extended-2.10.0 and STEP_Extended_Finalize-2.10.0 work, and then go mod-by-mod looking for any changes in "Detailed Instructions" that I might have missed, before pushing out a nicely packaged release.
2.10.0 has proven to be a lot harder than I had anticipated, especially with the change to use BethINI (it does a lot of magic for you behind-the-scenes, but from my perspective, there's no such thing as "behind-the-scenes")... and I had to do pretty much all of it twice after losing an almost-complete setup for STEP Core to an ill-advised "git clean -xdf" without staging the new XML files. I think having to do it the second time was a good thing, honestly, because the first time I did it, I was using the changelog, and I recall that one being either incomplete or otherwise insufficient.