v2.2.0

What's Changed

• [#114] 이벤트 핸들러 로직 분리 (Refactor/logic_separation) by @daejlee in #119
• [#115] 공지 기능 추가 (Feature/announcement new) by @daejlee in #120
• [#116] 어드민 페이지 추가 (Feature/admin) by @daejlee in #122

Full Changelog: v2.0.1...v2.2.0