Chessboard

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* Add Queen piece.
* Fix displaying of piece representation.
* Fix persistence of square occupancy between each piece addition.

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* Fix King displacement map.

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* Allow initialization of board pieces.
* Implement brute-force solver.

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* Package re-release to fix bad version number.

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* First public release.
* Implements a CLI to inititalize the chessboard.

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* First commit.