This clarifies order of arguments.

All enumerating loops index by size_t or const size_t.
The body of the loop is responsible for explicit conversion to int.
Methods should still be written to accept int, not size_t.

Lix should now compile without warnings with DMD 2.084.
The warning might be a problem in DMD 2.084:
https://issues.dlang.org/show_bug.cgi?id=19517

Cooperation of Wuzzy, Simon, and F.

Reason for the move: The lobby shall eventually display score bars after
a game. The lobby shall get scores from the game, but not the entire GUI
widget. The lobby shall create the widget itself.

The lobby doesn't display any GUI widget for scores yet; instead, the
lobby still prints the scores to the chat.