Add LICENSE file

This repository lacks a LICENSE file.

To add one all former contributors will have to be queried about this change.

GPL-3.0-or-later is sought after.

changed milestone to %v44

added 1 deleted label

changed the description

mentioned in merge request !5 (merged)

All former contributors have been queried by mail.

changed milestone to %v45

changed milestone to %v46

added statusin-progress label

mentioned in commit f0e77fa7

mentioned in commit b3a17e3e

mentioned in commit c1835712

mentioned in commit e264b446

closed via merge request !5 (merged)

added scopeenhancement label and removed 1 deleted label

mentioned in issue infrastructure#232 (closed)

removed statusin-progress label

added scopedocumentation label