Draws, handicap & komi changes, and ranking limits lifted

[dexonsmith]

@Feijoa

For the record, wasn’t it a bug in the old rating system which incorrectly accounted for handicap? Or was there also some bug in how it computed the stones?

It was two bugs: komi was calculated based on number of stones (instead of rank difference), and the ratings system adjusted after the game result based on number of stones (instead of rank difference). A few more details in the proposal thread.