Changes in version 1.0.0 (2026-07-19)                  

  - Initial release.
  - magic_rectangle(p, q) constructs a magic rectangle (p, q of equal
    parity; De Los Reyes et al. 2009 for even orders,
    Chai-Das-Midha 2013 for odd orders) or a nearly magic rectangle
    (opposite parity; Chai-Singh-Stufken 2019) for every order for which
    one exists.
  - rectangle_type(p, q) classifies existence ("magic", "nearly magic",
    "none").
  - verify_rectangle(M) checks the defining properties from first
    principles.
  - Exhaustive test suite over all orders up to 40 x 40.