Hi :)
just a small bug report, there are some .stamp files that got included in the release by accident. I noticed because it caused build problems, likely only due to the fact that my build process copied the files once, changing the mtimes in the process.
% tar tf nettle-3.5.1.tar.gz | grep '.stamp$' nettle-3.5.1/testsuite/test-rules.stamp nettle-3.5.1/desdata.stamp
Cheers, Justus