Add Go to line in Blame view

[An-dz]

Problem description

Currently on the Blame view there's no way to jump directly to a line, you can only scroll with the mouse.

Preferred solution

If a command like SublimeText Ctrl+G was added it would help a lot getting where I need to on very long files.

Alternatives

Also having Ctrl+R for function definitions would be awesome too.

[jp-pulga]

+1!