1.7.7

Make it obvious in sc ui when consecutive diff hunks are in different functions.
Hunk headers now show the enclosing function (git's hunk context) in the code font,
with the @@ line range faded. A hunk that moves into a new function gets a bold,
ruled header, while one that continues the function above keeps its name dimmed.

This release was contributed by @patrick91 in #152