Bug in MoveGen

[s-arash]

There appears to be a bug in move generation. This piece of code panics:

let board = Board::from_fen("rnbqkbnr/ppp2pp1/4p3/3N4/3PpPp1/8/PPP3PP/R1B1KBNR b KQkq f3 0 1".to_string()).unwrap();

let move_gen = MoveGen::new_legal(&board);

[jordanbray]

I probably deserve a bug with how much stuff I changed. I'll look at this in more detail in a few hours when I get home from work.

Thanks

[jordanbray]

Fixed in 3.0.1.