Feature: puni-kill-ring-save

[terlar]

It would be nice to have puni-kill-ring-save and friends, basically what the current functions do, but just put it in the kill-ring and not killing the content.

Specifically I would like to have puni-kill-line but without removing the content. I find myself doing a lot of puni-kill-line operations with immediate undo in order to copy blocks of structured code.

What do you think?