skymath 0.3.0

Planning-grade astronomy math for astrophotography tooling: angles, equatorial coordinates, sexagesimal parsing and formatting, angular separation and offsets, precession, MJD/JD/calendar conversions, sidereal time, and observer-local quantities (alt-az, airmass, transit).
Documentation 
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# Changelog

## [0.3.0](https://github.com/nightwatch-astro/skymath/compare/v0.2.0...v0.3.0) (2026-07-12)


### Features

* identify the IAU constellation containing any sky coordinate ([#6](https://github.com/nightwatch-astro/skymath/issues/6)) ([a3ba312](https://github.com/nightwatch-astro/skymath/commit/a3ba312e5e9c71272fc4f63525059cd055a09801))

## [0.2.0](https://github.com/nightwatch-astro/skymath/compare/v0.1.0...v0.2.0) (2026-07-12)


### Features

* Sun and Moon ephemerides — twilight, lunar separation, illumination, moon-avoidance ([#4](https://github.com/nightwatch-astro/skymath/issues/4)) ([cb9d63a](https://github.com/nightwatch-astro/skymath/commit/cb9d63a9b5e5a9dbb107448697dfe5a08ec67e4b))

## 0.1.0 (2026-07-12)


### Features

* planning-grade astronomy math library (coordinates, time, observer, frames) ([#1](https://github.com/nightwatch-astro/skymath/issues/1)) ([b9dd3f7](https://github.com/nightwatch-astro/skymath/commit/b9dd3f70ddaaa5706662d793dfe9d972728b9a95))