Release v1.2.0

Changelog

Improve defergroup API with better naming and Transfer method

• Rename WithError to OnlyOnError for clarity (deprecate old name)
• Rename Clear to CancelAll for clarity (deprecate old name)
• Add Transfer method for moving cleanup ownership to struct fields
• Update package doc and tests to use new names

Introduce DoWithTimeout

v1.1.1

This release includes:

• Minor lint error fix
• Fix mustgen issue

Release v1.1.0

Package defergroup is added.

Release v1.0.0

Stable release with guaranteed backward compatibility.