Iterate CoordSet through occupied bits - #24
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Use trailing-zero scans instead of testing all 256 possible coordinates. Preserve row-major order and expose an exact iterator size. A repeated 500-sample Criterion comparison against origin/main measures LinkedIn1/Fast 6.3% faster and GameOfCrowns1/Fast 30.4% faster. No changelog entry is needed because behavior is unchanged.
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Use trailing-zero scans instead of testing all 256 possible coordinates. Preserve row-major order and expose an exact iterator size.
A repeated 500-sample Criterion comparison against origin/main measures LinkedIn1/Fast 6.3% faster and GameOfCrowns1/Fast 30.4% faster.