deps: bump fraction from 0.15.4 to 0.17.0

[dependabot]

Bumps fraction from 0.15.4 to 0.17.0.

Release notes

Sourced from fraction's releases.

0.17.0

[0.17.0] - 2026-08-23

Changed

• Breaking: GenericFraction::<T>::from_unicode_str now requires T: CheckedAdd + CheckedMul. Custom backing types must provide both operations for mixed-component combination; standard bounded, big-integer, and dynamic backings satisfy these bounds.
• Breaking: Numeric-component forms in ordinary Fraction/Decimal, Unicode, GenericFraction radix, and Juniper parsing reject component-local signs while retaining one sign for the complete value. Fraction Juniper input still requires its explicit outer sign; Decimal Juniper input delegates to ordinary Decimal grammar. From<&str> for GenericDecimal continues to map parse failures to NaN.
• Breaking: GenericFraction changes its Num::FromStrRadixErr associated type from ParseRatioError to ParseError. Its fraction-only numerator/denominator grammar is unchanged, zero denominators return ParseError::ZeroDenominator, and direct Ratio parsing still uses ParseRatioError.
• Breaking: ParseError is now non-exhaustive; downstream matches must include a wildcard arm.
• Breaking: DynaInt changes its Num::FromStrRadixErr associated type to ParseError; malformed inputs and values that neither backing type can represent return ParseError::ParseIntError.

Fixed

• Unicode mixed-number parsing now returns ParseIntError when the raw combined numerator (whole × denominator + numerator) is not representable by the backing integer type, instead of panicking in debug builds or wrapping in release builds.
• Signed backing types no longer allow component-local signs to create negative magnitudes inside stored ratios; component-local signed-minimum inputs now fail deterministically.
• GenericFraction and DynaInt radix parsing no longer panic for bases outside 2 through 36; they return ParseError::UnsupportedBase instead of forwarding invalid bases to their backing integer implementations.

0.16.0

[0.16.0] - 2026-08-09

Changed

• Replaced optional lazy_static usage with std::sync::OnceLock and num-bigint constants for approximation accuracy multipliers (special thanks to Expyron for the std::sync::OnceLock patch).
• Breaking: Rust 1.70 is now the minimum supported Rust version (MSRV).

Fixed

• Fraction and Decimal parsing now routes zero-denominator inputs to signed infinity or NaN (including optional Unicode from_unicode_str) rather than panicking.
• Restored Decimal Ord/PartialOrd/Eq/Hash consistency by comparing each value using its stored precision, including truncation and canonical zero handling (-0, -0.9@p0, -0.04@p1), so ordered and hashed collections now agree.
• Added PostgreSQL NUMERIC infinity round-trip support for both Fraction and Decimal, encoding/decoding ±Infinity using 0xD000/0xF000 markers and documenting PostgreSQL 14+/unconstrained NUMERIC requirements.

Changelog

Sourced from fraction's changelog.

[0.17.0] - 2026-08-23

Changed

• Breaking: GenericFraction::<T>::from_unicode_str now requires T: CheckedAdd + CheckedMul. Custom backing types must provide both operations for mixed-component combination; standard bounded, big-integer, and dynamic backings satisfy these bounds.
• Breaking: Numeric-component forms in ordinary Fraction/Decimal, Unicode, GenericFraction radix, and Juniper parsing reject component-local signs while retaining one sign for the complete value. Fraction Juniper input still requires its explicit outer sign; Decimal Juniper input delegates to ordinary Decimal grammar. From<&str> for GenericDecimal continues to map parse failures to NaN.
• Breaking: GenericFraction changes its Num::FromStrRadixErr associated type from ParseRatioError to ParseError. Its fraction-only numerator/denominator grammar is unchanged, zero denominators return ParseError::ZeroDenominator, and direct Ratio parsing still uses ParseRatioError.
• Breaking: ParseError is now non-exhaustive; downstream matches must include a wildcard arm.
• Breaking: DynaInt changes its Num::FromStrRadixErr associated type to ParseError; malformed inputs and values that neither backing type can represent return ParseError::ParseIntError.

Fixed

• Unicode mixed-number parsing now returns ParseIntError when the raw combined numerator (whole × denominator + numerator) is not representable by the backing integer type, instead of panicking in debug builds or wrapping in release builds.
• Signed backing types no longer allow component-local signs to create negative magnitudes inside stored ratios; component-local signed-minimum inputs now fail deterministically.
• GenericFraction and DynaInt radix parsing no longer panic for bases outside 2 through 36; they return ParseError::UnsupportedBase instead of forwarding invalid bases to their backing integer implementations.

[0.16.0] - 2026-08-09

Changed

• Replaced optional lazy_static usage with std::sync::OnceLock and num-bigint constants for approximation accuracy multipliers (special thanks to Expyron for the std::sync::OnceLock patch).
• Breaking: Rust 1.70 is now the minimum supported Rust version (MSRV).

Fixed

• Fraction and Decimal parsing now routes zero-denominator inputs to signed infinity or NaN (including optional Unicode from_unicode_str) rather than panicking.
• Restored Decimal Ord/PartialOrd/Eq/Hash consistency by comparing each value using its stored precision, including truncation and canonical zero handling (-0, -0.9@p0, -0.04@p1), so ordered and hashed collections now agree.
• Added PostgreSQL NUMERIC infinity round-trip support for both Fraction and Decimal, encoding/decoding ±Infinity using 0xD000/0xF000 markers and documenting PostgreSQL 14+/unconstrained NUMERIC requirements.

Commits

• 53d04cd chore(release): prepare 0.17.0
• ca92bcd docs(parse): prepare parser contract for review
• 4e3fd9f perf(parse): benchmark DynaInt radix parsing
• df1dff2 fix(parse): make DynaInt radix parsing panic-free
• 1767207 ci(msrv): lint the parser smoke harness
• e7c2387 fix(parse): reject signs inside numeric components
• 5051604 fix(unicode): reject overflowing mixed numerators
• d24249d chore(release): prepare 0.16.0
• fde4af5 docs(rustdoc): fix generic type rendering
• 23cce20 docs(postgres): explain infinity support
• Additional commits viewable in compare view

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