set reverse=True by default in basis_for_quaternion_lattice()

[yyyyx4]

The reverse=True flag is recommended (and set by default) for quaternion orders, but I think it is also the better choice for all other quaternion lattices: Among other things, setting reverse=True makes the returned basis contain the norm of an ideal (very usefully generalizing the fact that the returned basis for an order contains 1).

Component: algebra

Author: Lorenz Panny

Issue created by migration from https://trac.sagemath.org/ticket/34880

[sagetrac-git]

Changed commit from 1282c28 to bc3cdda

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

bc3cdda

set reverse=True by default in basis_for_quaternion_lattice()

[mkoeppe]

Removed branch from issue description, it is replaced by PR #34962