sofars 0.6.0

Pure Rust implementation of the IAU SOFA library
Documentation 
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/// Rotate an r-matrix about the z-axis.
pub fn rz(psi: f64, r: &mut [[f64; 3]; 3]) {
    let s = psi.sin();
    let c = psi.cos();

    let a00 = c * r[0][0] + s * r[1][0];
    let a01 = c * r[0][1] + s * r[1][1];
    let a02 = c * r[0][2] + s * r[1][2];
    let a10 = -s * r[0][0] + c * r[1][0];
    let a11 = -s * r[0][1] + c * r[1][1];
    let a12 = -s * r[0][2] + c * r[1][2];

    r[0][0] = a00;
    r[0][1] = a01;
    r[0][2] = a02;
    r[1][0] = a10;
    r[1][1] = a11;
    r[1][2] = a12;
}