Checkmate and Pawn Promotion UI

[fraggle222]

Would this project welcome contributions to add checkmate and pawn promotion UI to the library? It seems these are missing but essential features that anyone using chessground has to find alternate implementations for. Is there a technical (or philosophical) reason not to add these?

[fraggle222]

I guess checkmate UI is easily enough handled using existing chessground setShapes or setAutoShapes : board.setAutoShapes([
{
orig: square,
label: {
text: '#'
}
}
]);
This gives effect similar to what lichess has.

But pawn promotion UI, at least on lichess seems to be handled outside of chessground in separate div overlays that get added. This is probably the main thing 'missing' from chessground that people need to figure out from UI perspective.