Ok, it's in the configurator now:
I made a few mistakes on the layout file for the split layouts, so right now they look like this:
But I have already corrected the issue so sometime later today or tomorrow or something it should show up like this:
If you are trying to do iso or split spacebar right now you just have to use the default keymap which has ALL the different slots open. I'm not actually sure how to setup iso in the configurator ux, but I can add other layouts if there is anything people care about. I tried to get all the obvious ones, but I just have WKL so I only have one option and was pretty much guessing.
If anyone has any issues let me know.
To use the bootloaderHID thing you just run a command like this (in windows):
.\bootloadHID.exe -r .\singa_amnesia0287.hex