SPC opens a window showing the diff without selecting it

RET opens a window showing the diff and selects it

In the history buffer, n and p will have a hook to find a buffer with active window in current frame whose value of hyperdrive-diff-entries' has both car and cdr with same hyperdrive and path and update its hyperdrive-diff-entries' value to match the entry at point and its previous version.

Add overlay to bold the version in the history buffer matching its hyperdrive-current-entry

Buffer name of history buffer should contain entry description.