5.4.0

What's Changed

• Rewrite removeHiddenElems by @johnkenny54 in #37
• Add deprecation warnings to removeDeprecatedAttrs and cleanupAttrs. by @johnkenny54 in #38
• Deprecate removeEmptyAttrs by @johnkenny54 in #39
• Add createGroups plugin. by @johnkenny54 in #43
• moveElemsStylesToGroups: update attributes as well by @johnkenny54 in #44
• Deprecate moveElemsAttrsToGroup, cleanupEnableBackground. by @johnkenny54 in #45

Full Changelog: v5.3.0...v5.4.0