Release 2.1.1

• Restore prettierignore a34ccb8
• Upgrade setup 9d8111d
• Update setup 9325f92
• add auto-changelog 8ab2bd3
• Upgrade dev deps 05dd086
• Upgrade deps 6929c69
• Update deps aa67763
• Fix release note 4e00fd6
• Add changelog script 6e012f3
• Add --only-version to release script e7fa2e7
• Fix eslint 0b0a91d