Dragonfly 0.8.0

A nice release, not very big but things are moving in the right direction.

1. Transactional support is extended to WATCH/UNWATCH by @dranikpg
2. A new SET data-structure was introduced by @braydnm . It can potentially provide for up to 50% memory savings when using small records in the set. See dense set doc for more details. You can start using the upgraded set with --use_set2 flag when running dragonfly.
3. JSON.DEL was added to JSON family by @iko1 .

Huge thanks to all the contributors! ❤️

What's Changed

• feat: Change tls command line argument to conform with Redis by @odedponcz in #276
• fix(server): Fix QUIT not shutting down connection by @dranikpg in #280
• feat(server): support for setnx command #281 by @boazsade in #283
• feat(server): Watch & Unwatch commands by @dranikpg in #277
• docs(api): Update api_status.md by @dranikpg in #285
• feat(core): Added DenseSet and StringSet types by @braydnm in #268
• chore(server): Fix clang warnings and errors by @romange in #290
• docs(src/core): readability improvements by @ryanrussell in #293
• fix(server): Added RDB load / save for DenseSet by @braydnm in #297
• docs(server): readability cleanup by @ryanrussell in #304
• feat(server): implement json.del command (#239) by @iko1 in #262

Full Changelog: v0.7.0...v0.8.0