Eric Coissac
6687911d60
Introduces `into_kmers()` and `into_canonical_kmers()` consuming methods to `PackedSeq` and `Superkmer`, enabling zero-allocation sliding-window k-mer extraction via bitwise operations. This complements existing borrow-based iterators by allowing direct ownership transfer. Also includes minor documentation updates, whitespace fixes, and new unit tests to verify canonical k-mer iteration counts and output sequences.
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