0.4.0-rc-1

feat

• Add active_session_count field to HeartbeatFrame protobuf message eaad82c

chore / docs

• Refactor refresh button selectors to use aria-label and add worker type modal interactions in web tests 0ceac9a
• Update workers page test to verify online/total worker display format 90c19ff

Full Changelog: 0.3.3...0.4.0-rc-1