[tmux] Copy mode key binding changes
[tmux] Copy mode key binding changes

* do not exit copy-mode-vi after selection, 'q' should be used for that
* by default Esc cancels the current selection, the binding is extended
  so that if not selection is present it also exits the copy mode
* 'y' now yanks the whole line if no selection is present, this allows
  to have a similar behavior as pressing 'yy' in vim

mliszcz/dotfiles,mliszcz/dotfiles