v2.2.1

Migration guide: https://superforms.rocks/migration-v2
More detailed list of what's new: https://superforms.rocks/whats-new-v2

Fixed

• Added focusOnError option to SuperForm.validateForm type (it was only in the implementation).
• Enums could not be detected as an invalid value if the posted value was an empty string, instead it defaulted to the enum first value.
• $posted was reset by mistake to false after posting, when resetForm option was true.