Parola Clock exit animation

The print entry animation did the trick! I added a fifth state, since the minute will have ticked over, but I do not want to update the display value until it has finished animating out of frame.

Again, @marco_c, thanks for the fantastic work on this library. I'm awaiting another few FC16 modules, at which point I'll build the final display, likely using zones.

On a different note, does Parola currently support zones that are smaller than a single display? I'd like to be able to set up a zone for the colon separating minutes from hours, and animate that separately. If it does not, but wouldn't be too difficult to code, I would be more than happy to take a crack at it and submit a pull request.

Thanks again!