v0.1.1

What’s new in v0.1.1

• Add fixed-length factorization queries and enumeration via has_factorization_of_length() and factorizations(factor_count=...).
• Add immutable FactorizationRelation objects with canonicalization, common-factor cancellation, reduced relations, and standard factorization distance.
• Expand tests and tutorial documentation for the new APIs.
• Remove runtime assertions from the factorization engine.