Support adding code discussion threads using fugitive #10
Description
Fugitive has some commands that let the user see diff in the code (Gdiffsplit, Gvdiffsplit, Ghdiffsplit`, maybe more).
make the plugin support adding comments on code when looking at this diff.
This should make the function that adds discussion threads on the code really easy, and make the plugin actually good. After this issue, the plugin should become really usable for the first time.