v2.12.0

What's Changed

• refactor: remove optional in ReplacementMap by @uhyo in #70
• add CLAUDE.md by @uhyo in #75
• fix: preserve call signatures of target object in Object.assign by @uhyo in #76
• fix: change Node#parentElement to allow non-HTMLElement parents by @uhyo in #77
• chore: upgrade TypeScript to 5.9 by @uhyo in #78

Full Changelog: v2.11.0...v2.12.0