Do not update the website via `make update-website`. Which version of
Flamenco is published on the website is managed manually, independently of
the version in the Git repo.
`make update-version` now also updates
`web/project-website/data/flamenco.yaml` so that the new version is
listed as the latest one on flamenco.blender.org.
Note that such a change will only be visible online after publishing the
site with `make project-website`. Be sure to only do this after the
build has been uploaded there, to avoid dead links.
Don't log the git commands in the version updater Go code. They are already
shown by the Makefile (`update-version` target), and we should only have
one set of those commands to maintain.
Flamenco now no longer uses the Git tags + hash for the application
version, but an explicit `VERSION` variable in the `Makefile`.
After changing the `VERSION` variable in the `Makefile`, run
`make update-version`.
Not every part of Flamenco looks at this variable, though. Most
importantly: the Blender add-on needs special handling, because that
doesn't just take a version string but a tuple of integers. Running
`make update-version` updates the add-on's `bl_info` dict with the new
version. If the version has any `-blabla` suffix (like `3.0-beta0`) it
will also set the `warning` field to explain that it's not a stable
release.
