Changes in version 1.1.0 of 2022-07-20:
* Implement N-systems, and use 1-systems.
* Adapt coefficient recognition to FPLLL-5.4.2.

Changes in version 1.1.0 of 2021-02-04:
* Overhaul of the recognition of quadratic coefficients using LLL:
  - Choose FPLLL-4, FPLLL-5 or PARI/GP according to availability.
  - For PARI/GP versions from 2.13 on, use the half-gcd function for
    preconditioning the matrix passed to LLL.
* Add a check target.
* Increase the minimal PARI/GP version to 2.9.
* Bug fixes.

Changes in version 1.0 of 2014-03-27:
* First final release, accompanied by the announcement of the class number
  20 016 record.

News for version 0.9 of 2013-05-17:
* The code goes public, and the paper is out.

