v1.2.1

Release v1.2.1

What's Changed

• PEP-561 compatibility by @vazarkevych in #18
• Fix zero value evaluation for _getOrigHashValue by @vazarkevych in #20
• Feature/load features async by @vazarkevych in #19
• Added SSE client by @vazarkevych in #23
• Saved groups, $inGroup $notInGroup operators, versionCompare by @vazarkevych in #22
• Feat/multi context by @madhuchavva in #27
• Update to spec 0.7.1, fix failing tests by @jdorn in #30

Full Changelog: v1.1.0...v