show startup menu
menu creating mechanism. created startup menu
info screen. show menu again when was incorrect input
rules screen
store texts in files
rename Menu.Listener methods
rules menu
format texts
new game menu
selection of name and symol for Human. Refactor: created MenuManager class in Game class
initialize game
queue mechanism. human player make step
player NAME_MIN_SIZE and NAME_MAX_SIZE constants
human_human mode initialization
rename package
disable select the same symbols for humans
check field for winner. Announce the winner
computer AI
show hint
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