Add better error handling

Release v1.6.0

Add better error handling

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Changelog

1.6.0 - 2026-08-14

Added

• Bounds validation (RangeError) in Board accessors and getLastArrayItem
• @throws JSDoc on Game constructor, Board accessors, and getLastArrayItem
• Invariant docs for getWinnerFromFields / GameStrategy.getWinner
• Tests for all new validation and listener error isolation paths

Fixed

• savePlayerSelection (deprecated) no longer silently corrupts the board on invalid input — returns PlayerMoveStatus like savePlayerMove
• Throwing listeners no longer abort subsequent event emissions; errors are re-thrown after all events fire

Changed

• savePlayerSelection return type: void → PlayerMoveStatus
• tsconfig.json lib set to ["ES2021"] for AggregateError