Automatic refresh contents?

[Ian Y.E. Pan]

In ranger-mode, the buffer is not automatically refreshed. For instance, if I create a new directory with + and type the directory name and press RET, the new directory doesn't immediately show up. Instead, I would have to invoke C-r (for ranger-refresh), or alternatively run the command ranger again for the new directory to show up.
Is there a way to have ranger automatically refresh the buffer contents? A customizable delay (in seconds) would also be a nice touch.