Work on release announcement draft in subsurface.github.io repo to get translations

Run scripts/makeRelease.sh
Upload Subsurface and libdc sources to webserver
Push sources and tags to github
merge master into snap-stable and push that to github

Check Launchpad and OBS to ensure release builds have been triggered
Check Mac notorization success
Ensure Windows machine is unlocked and authorize Windows signing
Check that Windows, Mac, AppImage have been moved to downloads/ folder on webserver
Check filenames of all the downloads
Check that the update check shows the correct version

Add date to release announcement draft and move to the corresponding _posts directories
Run the switchversion script to update links on website
- index pages in all languages
- download pages in all languages

Post to Scubaboard