toHijri() now passes Date.UTC(year, month, date) to hijri-core instead of the raw
instant from this.toDate(). Fixes wrong-Hijri-day results around UTC-midnight on
hosts east or west of UTC. Lock-step with hijri-core fix/utc-day-boundary.
Fix documentation style (no em dashes). Update hijri-core devDep
from file: path to ^1.0.0. Correct UAQ range to 1318-1500 AH /
1900-2076 CE throughout.
Day.js plugin adding Hijri calendar support via hijri-core. Adds
toHijri(), fromHijri(), hijriYear/Month/Day(), isValidHijri(), and
formatHijri() to all Day.js instances. Supports UAQ and FCNA calendars
via ConversionOptions. Format token escaping wraps substituted values
in Day.js bracket syntax to prevent re-interpretation as format tokens.
14 ESM + 8 CJS tests passing. Dual CJS/ESM build.