Consider if we should stop using `TotalWrapper` for `OpaqueBitboard` for performance gain about scalachess HOT 3 CLOSED

yes, I started to use that recently and with async-profiler to understand more about what happen under the hood.
Here is one example I got after running bench-marking with async-profiler.

We can see that, just for Bitboard.contains it required much more than what needed.

I guess scalalib.newtypes are over kill for Bitboard

Maybe some inline for Bitboard.contains can help a bit in this case, but I think, we can have a much bigger gain if we migrated Bitboard from scalalib.newtypes.

from scalachess.

do you use this metals command? it might provide some insight

from scalachess.

close with #449

from scalachess.