v0.61.0

Summary

This is the first release after we enabled Immutable releases.
Functionality is not changed at all.

What's Changed

• chore(cd): update base branch to main from master by @kyu08 in #521
• docs(contributing): init by @kyu08 in #522
• docs(pr_template): update TODO section by @kyu08 in #523
• docs(readme): update task support status by @kyu08 in #524
• docs(readme): clarify the minimum supported task version by @kyu08 in #525
• docs(readme): add links to badges by @kyu08 in #526

Full Changelog: v0.60.0...v0.61.0