#40: Fixing bye bug. - Changing preference map to require even number of players. - Giving a bottom player the bye before generating rest of pairings.
#40: Fixing bye bug.
- Changing preference map to require even number of players.
- Giving a bottom player the bye before generating rest of pairings.

sten626/mirror-match,sten626/mirror-match,sten626/mirror-match