v1.0.0-RC1

Announcing v1.0 of ZGrab2 in prerelease!
Assuming there's no regressions or bugs reported in the next month or so, we can tag a release version.

Major Changes

• Adds a DNS rate limiter and per-IP rate limiter. These can be used to cap the number of DNS and connections, respectively, a server will receive. Look at the --help for --dns-rate-limit and --server-rate-limit for more details
• Adds a memcached scan module for scanning the memcached protocol. Thanks to @nicholasingino for this!

Improvements

• Adds CLI flag grouping and more detailed module descriptions in --help
• Adds non-TLS retry to Postgres scans to get servers that don't support TLS. Thanks @UnknownEclipse for this!

New Contributors

• @UnknownEclipse made their first contribution in #573
• @nicholasingino made their first contribution in #551

Full Changelog: v0.2.0...v1.0.0-RC1