v0.4.0

Delete old commands start from !

What's Changed

• fix #84 by @Azuki-bar in #85
• fix not read bug by @Azuki-bar in #88
• 入退室読みあげにユーザ辞書を適用するように変更 by @Azuki-bar in #90
• add golangci lint by @Azuki-bar in #89
• add golangci yaml config by @Azuki-bar in #91
• delete user msg command start from ! by @Azuki-bar in #92

Full Changelog: v0.3.0...v0.4.0