21.09.0

• Docker Image scalableminds/webknossos:21.09.0 🐳
  Run it via export DOCKER_TAG=="21.09.0" && ./start-docker.sh.
• Changelog
• Migration Guide

Highlights ✨

• Added shortcuts K and L for toggling the left and right sidebars. #5709
• Added support for datasets that have multiple segmentation layers. Note that only one segmentation layer can be rendered at a time, currently. #5683