made another major update
I studied the way just-dice and satoshidice makes their provable randoms and implemented something similar to satoshirat as well.
Everybody can check their rolls or other's rolls to ensure the game is fair for everybody.
More info on
satoshirat.com.
For this i had to change the way speeds are drawn to a DnD fashion roll.
A level 1 rat will run by default with 10+d21.
The order of the rats is determined now by their average speed which is 2*s1*s2/(s1+s2).
Enjoy!