Fixes for puzzles, games, iCloud sync, and KIF files.

• Shared KIF files now include the starting position of handicap games, minishogi, and games started from an imported position, so they replay correctly in other shogi apps and when opened again in ShinShogi. KIF files from other apps that start from a board diagram now open at that position too.
• Fixed: in puzzles, drills, and online games, a move that could either promote or not froze the board instead of asking whether to promote.
• Fixed: iCloud sync could undo your review progress, sending puzzles you had just solved straight back into the review queue.
• Fixed: iCloud sync could bring back a Dan Ladder promotion run that a loss had ended.
• Fixed: taking back the computer's first move when you played Gote left the game stuck.
• Fixed: resigning while the computer was thinking resigned for the computer instead, and counted the game as your win.
• Fixed: KIF files saved by many Windows shogi programs wouldn't import.