Add commit summary to blame view

[nameOfUser0236]

I (being a human 😢 ) can't early glean the contents of a commit by its SHA, author, and date alone. Having the commit summary will greatly increase the usefulness of the blame view, and reduce the amount of switching back and forth needed.

[nameOfUser0236]

I have hacked together a python script that does this. Very much a rough draft. https://gist.github.com/nameOfUser0236/b47c493ed128205085051e6887c8d718