Updated link to help page in MD file
Moved handicap setup to HandicapSetter new class
Fix num_players was not used on new game
Renamed HumanPlayer in ConsoleHumanPlayer

+ removed undo request partial feature
New ScoreAnalyser factored out from Controller

+ unit test
Player: no more controller

+ removed partial feature "undo request"
Goban: detect empty from stone.group instead of color
HandicapSetter: removed extra check

(game logic enforced outside this class)
TestAi: no more Players in controller

(so let_ai_play moved out controller too)
Unit tests: no more players/analyser in controller

+ removed extra undo in test Groups
BoardAnalyser: goban provided later than init
Controller: factored out several features

Deleted: undo confirmation (partial feature)

Moved out: messages and "show"-like features, list of players and
related features, "autoplay" (cont for 2 AI), breeding game, console
game, BoardAnalyser and score computing

Added: list of who resigned, error message list

Reorg: error handling, multiplayer resign feature
Updated Breeder to controller's refact

(breeding game from controller moved in as "play_until_game_ends")