Implement ISO 8601 date support throughout library#101

Open

Copilot wants to merge 13 commits intomainfrom

copilot/sub-pr-94-another-one

Commits on Jan 5, 2026

Implement ISO 8601 date comparison and fix correlation constant

Copilot
and
drewsonne
committed
Fix negative year formatting and add clarifying comments

Copilot
and
drewsonne
committed
Improve comments explaining BCE to astronomical year conversion

Copilot
and
drewsonne
committed
Simplify ISO year conversion by using this.date.year directly

Copilot
and
drewsonne
committed
Fix merge conflicts and adjust ISO comparison to year-only

Copilot
and
drewsonne
committed
Refactor: extract year extraction into helper function

Copilot
and
drewsonne
committed
Fix year extraction to handle negative years correctly

Copilot
and
drewsonne
committed
Use regex for more robust year extraction

Copilot
and
drewsonne
committed
Add ISO 8601 date parsing support to GregorianFactory

Copilot
and
drewsonne
committed
Improve ISO 8601 regex pattern comment clarity

Copilot
and
drewsonne
committed
Apply PR review feedback: improve code quality and test coverage

Copilot
and
drewsonne
committed
Improve code clarity with better comments and variable initialization

Copilot
and
drewsonne
committed
Add clarifying comments and improve error messages

Copilot
and
drewsonne
committed