Import a new `NEWS.md` file with the changelog for each release. This is
targetted at distributors, so it should contain information on new
features, modified features, and anything important to packagers. This
is not a replacement for the git-changelog, but rather a human-readable
instruction to packagers what needs to be changed when using the new
release.
Additionally, copy `make release` from *osbuild* to help in creating new
release entries in NEWS.md.
