Optional update for tor, zstd

This update introduces tor 0.3.7.1 and zstd 1.3.1 to the SUSE PackageHub.

Tor is an anonymizing overlay network for TCP (The onion router).
ztds (Zstandard) is a lossless compression algorithm targeting real-time compression scenarios.

Fixed bugs
Selected Binaries
openSUSE Build Service is sponsored by