Stop shipping a 1990s C library to compute planets. Xalen is the pure-Rust, Apache-2.0 replacement for Swiss Ephemeris.

Swiss Ephemeris, a 1990s C library for computing planets, has been replaced by Xalen, a pure-Rust, Apache-2.0 alternative. Xalen offers improved performance, thread-safety, and a permissive license, making it a better choice for production use. To migrate, simply replace 'swisseph' with 'xalen.swe' in your code. This switch eliminates the need to ship binary data files and resolve license issues.