Request for X-FEN support

Let's come back to this after initial ports for D6 and D7 are in. #373871: port Chessboard Renderer to D6

@neoliminal: any type of contribution would be very welcomed!
The 6.x-1.x-beta1 release is here and new releases will follow quickly after these are in: http://drupal.org/project/issues/chessboard?text=&status=8&priorities=Al...

If somebody could point out images suitable to add to the existing ones...
Working with a complete new set of images is out of scope at the moment.

So the chancellor, archbishop, etc. are in the brown and orange 45x45px Wikimedia set of images. No fairy pieces in the original green set. That leaves us with:
1) Switch chessboard to the brown and orange set of bigger images.
2) Switch chessboard to down-scaled (40x40) brown and orange images.
3) ...

I do want X-FEN support in 7.x-2.x and 6.x-2.x.

I've opened #1076148: Add Archbishop and Chancellor to default set to get us one step closer.

#1269424: Add support for "9" and "10" in empty squares notation

If you want to request anything other than Archbishop and Chancellor, please open a separate issue.