window: support early exit from the readline prompt with Ctrl-{C,G}
news: update
ncmpcpp: do not ignore SIGINT
ncmpcpp: ignore SIGPIPE
statusbar: use scoped locks instead of lock/unlock functions
window: add ScopedStringHelper and use it where appropriate
window: rename getString to prompt
window: display_string: add comments
statusbar: rename getString to mainHook
window: display_string: properly handle invalid multibyte characters
actions: make askYesNoQuestion use NC::Window::prompt
actions: rename askYesNoQuestion to confirmAction and make it throw on 'n'
actions: replace bare readKey with prompt everywhere