implement hashValue consistently with equality operator
use correct algorithm in test method
fix precision warning when compiling for 64 bit architectures
remove redundant super protocols
move __block after type
add algorithm test on using tic-tac-toe
extract move sorting to common superclass JCSGameAlgorithmBase, use C array to collect and sort moves
remove unused JCSMove protocol
fix placement issues when game center controllers were shown in portrait mode, remove obsolete autorotate code
upgrade to new GameCenter protocols, fix deprecation warnings
avoid showing invitation screen again when the player triggered an invitation from GameCenter and then leaves the game screen
handle activation via GameCenter push notifications