Closes #23

Simplify radio logic and catch corner case where no name specified.

* Radio groups are now independent of each other wrt the required attribute.
* They respect the ...

Also, make selected and checked attributes booleans to be more HTML 5
compliant.

Thanks, phiw13

Thanks, Pat64

Thanks, Wagner Brahm

The div inside the form seems useless and can complicate styling.

Add code highlighting classes

Thanks, Jorge Hernandez

Thanks, Pat64

Thanks, qrayg

Fixes issue #30.

Prevents invalid markup for select lists

Remove mentions of `zemRequirederrorElement` in docs. Thanks, Phil

Clarity. Thanks Phil

Consistency. Thanks Phil

Thanks Phil

Fixes #21

Fixes #19

Consistent break behaviour for select tag, and improved documentation. Thanks Phil

Aggregate checks can't currently highlight input fields that require
attention.

Also, fix rogue quoted values in radio and checkbox labels.

Conflicts:
zem_contact_reborn.php

Thanks Phil. Fixes #16.

Thanks René

For backwards compat.

Redundant classes (user can define their own if needed).

Missing a default class for email field. Thanks, Phil

An example of body_form attribute usage. Cheers Phil

Fleshed out examples of select and option tags. Thanks Phil

Without a value attribute the tag will test if the field exists and has
some content. With a val...

Pattern attribute documentation. Thanks Phil

Although this is valid, it is discouraged as the type=email itself has
pattern validation built-...

Don't make extra work for yourself. Thanks, Phil.

Just let GitHub list additional contributors.

Further documentation tweaks, including a note about not requiring
zem_contact_lang any more.

Textile can't handle email addresses as code