aceteam-workflow-engine v2.0.0rc4

What's Changed

• Bump version to 2.0.0rc4 and update changelog (d8cd181)
• feat(nodes): make AddNode variadic (#80) (ab307e7)
• feat(context): add on_workflow_yield hook and refine execution state semantics (#79) (6c7324d)
• feat(nodes): add titles and descriptions to all node fields (#78) (51aacf9)

Full Changelog: 2.0.0rc3...v2.0.0rc4