Tweak validation methods

They are now public and can be called individually. Validation can also be skipped by setting the validate_send property to false.
Add argument for reversing regex validation
Allow other values than boolean for checkboxes
Don't count zeroes as empty value
Fix line break regex from affecting some characters
Add field data getter
Remove aria-required from checkboxes

It's invalid HTML for some reason
Minor tweaks/formatting. Version 1.7.0.
Update version to 1.1.11. Update documentation.