v1.9.0

What's Changed

• Introduce Testing by @merydian in #233
• fix: check for duplicates in proc with traveling salesman by @merydian in #275
• Use qgs settings instead of config yml by @merydian in #249
• fix: correct badge links in readme by @merydian in #282
• Add export endpoint by @merydian in #269
• Error with canvas scenes when deleting selected vertices in list by @merydian in #278
• extend german translation by @koebi in #280

Full Changelog: v1.8.4...v1.9.0