Bump iers from 0.1.1 to 0.2.0

[dependabot]

Bumps iers from 0.1.1 to 0.2.0.

Release notes

Sourced from iers's releases.

v0.2.0

0.2.0 - 2026-07-25

Added

• LeapSecond.expires_on, LeapSecond.expired? and LeapSecond.updated_through expose the expiry date and IERS bulletin that Leap_Second.dat states in its header. Both were previously discarded with the rest of the comment lines. Unlike Data.status.cache_age, which measures when a file was downloaded, these describe how long the data itself stays authoritative.
• LeapSecond.at now answers 1961-01-01 through 1972-01-01, the era when UTC was steered by rate adjustments rather than whole leap seconds. It returns those values as exact Rationals. The coefficients come from the USNO tai-utc.dat file and are bundled in source, since they are fixed. The change is additive: the pre-1972 range previously raised, so no successful call returns anything different. TAI.utc_to_tai and TAI.tai_to_utc gain the same range for free.

Changed

• Parsers::LeapSecond.parse returns a Table of entries and metadata instead of an array of entries. Parsers is internal; the public API is unaffected.
• Parsers::LeapSecond.parse no longer raises Encoding::CompatibilityError on a file containing invalid UTF-8. Header metadata is read on a best-effort basis and an unreadable data row raises ParseError as before.

Full Changelog: rhannequin/iers@v0.1.1...v0.2.0

Changelog

Sourced from iers's changelog.

0.2.0 - 2026-07-25

Added

• LeapSecond.expires_on, LeapSecond.expired? and LeapSecond.updated_through expose the expiry date and IERS bulletin that Leap_Second.dat states in its header. Both were previously discarded with the rest of the comment lines. Unlike Data.status.cache_age, which measures when a file was downloaded, these describe how long the data itself stays authoritative.
• LeapSecond.at now answers 1961-01-01 through 1972-01-01, the era when UTC was steered by rate adjustments rather than whole leap seconds. It returns those values as exact Rationals. The coefficients come from the USNO tai-utc.dat file and are bundled in source, since they are fixed. The change is additive: the pre-1972 range previously raised, so no successful call returns anything different. TAI.utc_to_tai and TAI.tai_to_utc gain the same range for free.

Changed

• Parsers::LeapSecond.parse returns a Table of entries and metadata instead of an array of entries. Parsers is internal; the public API is unaffected.
• Parsers::LeapSecond.parse no longer raises Encoding::CompatibilityError on a file containing invalid UTF-8. Header metadata is read on a best-effort basis and an unreadable data row raises ParseError as before.

Commits

• 99e219c v0.2.0 release (#6)
• 374f4eb Extend LeapSecond.at to the pre-1972 drift era (#5)
• ef0ba36 Expose leap second file expiry and bulletin (#4)
• 101031d Add Action for auto update IERS data (#3)
• See full diff in compare view

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