UniStuttgart-VISUS/damast: v1.3.0

This minor release includes two new features:

• Add map material that is suitable for screenshots in publications (224). The map material added consists of WebMercator tiles showing only shaded relief (repository), which are licensed under CC-BY-4.0, and water features from Natural Earth, which are in the public domain.
• Change the tags view header and filter behavior to match that of the sources view (select all, none, invert; sort by name or evidence count; no selection means no match) (220).

The release also includes updates to dependency versions, as well as two smaller bugfixes:

• Resolve an issue with Python API changes that lead to errors in newly-built Docker images (#221) by pinning the Docker base image version and using urllib.parse.urlencode instead of werkzeug.urls.url_encode.
• Resolve an issue where the switch between the qualitative and quantitative timeline modes did nothing (222).