Added 'yes' and 'no' phrases to language files
Added 'StartGame' and 'AnswerSelected' methods to 'GameProcessScript' class
Added 'GetPrizeForQuestion' and 'GetGuaranteedPrizeForQuestion' methods to 'GameFormat' class. Added 'QuestionCount' read-only property and class fields are now protected
Game state FULL_QUESTION renamed to WAITING_ANSWER
Added third guaranteed prize (question number 15) in ClassicGameFormat