Thanks for the info. Sorry about my frustration :/ But I just had a huge Aha that may help understanding changes in the future. I went to the GitHub mirror and discovered something /really/ cool...

1. I navigated to the class side of RBVariableNode and noticed the button with the clock & backward arrow on it

2. Clicking it, lead me to a list of commits perfectly scoped to the methods in question. There, I clicked on the SHA of the last commit

3. I was presented with a) the image version where it was integrated b) the issues integrated, and c) the method diffs!!!

I didn't realize that e.g. the update and issue numbers were on github. This is really great.