Feature and maintenance release to coincide with Textpattern 4.9.0:

• For Textpattern 4.9.0+ only.
• Hook into core's email workflow, sending via internal mail or SMTP accordingly.
• Bake spam-protection tools into the plugin:
  ** action attribute for the <txp:com_connect> tag.
  ** delay attribute to foil automated form-filling scripts.
  ** <txp:com_connect_expect> and expected attribute to check submitted values.
• Add support for file attachments via <txp:com_connect_file />.
• Add <txp:com_connect_header> tag for adding arbitrary email headers.
• Deprecate <txp:com_connect_mime> in favour of the wrapper <txp:com_connect_body> tag.
• Fix com_connect_serverinfo not returning values (thanks, whocarez).
• Fix Passing null to function in PHP 8 (thanks, peterj and jools-r).

Maintenance release with the following features:

• Use self-closing tags to keep validators happy (thanks, jools-r).
• Fix for concatenated headers/line endings on some servers (thanks, hidalgo, Kjeld, Gallex, and phiw13).
• Add replyto attribute (thanks, René).

• For Textpattern 4.9.0+ only.
• Hook into core's email workflow, sending via internal mail or SMTP accordingly.
• Deprecate <txp:com_connect_mime> in favour of the wrapper <txp:com_connect_body> tag.

Update for Textpattern 4.7.0+ and higher.

• Fix a few PHP 8.x warnings.
• Load lang strings in a Textpattern 4.7.0-ish way.
• Add en language designators to Textpack (thanks, cara-tm).
• Introduce <txp:com_connect_mime> for supporting HTML content.
• Only display labels if they've been specified (thanks, dragondz and jools-r).
• Fallback on name if label is empty.
• Use 'expire' attribute value in deletion of old tokens.
• Sanitize field names so forms still submit if names contain spaces.
• Permit {Option label} syntax to specify empty select entry that validates
  (thanks, phiw13 and colak).
• Fix <txp:com_connect_value> to actually match labels.
• Remove use of deprecated EvalElse().
• Replace deprecated Txp core functions with Txp::get().
• Pass $redirect into delivery callback.

Final Textpattern 4.6-compatible release.

• Updated Composer installation.
• Added code syntax highlighting.

• zcr_file_attach has been renamed with ext_ prefix.
• Documentation updates and typos.

• Plugin rebranded as com_connect.

A slew of bug fixes, mainly:

• Empty attributes treated correctly (thanks, Pat64 and maniqui).
• Avoid missing $lang warnings (thanks, phiw13).
• zem_contact_select and zem_contact_option attributes treated in a more HTML 5 compatible manner.
• Fix radio buttons (thanks, Adi) and add value attribute to them and checkboxes (thanks, philwareham).
• Add support for browser_validate (a.k.a. novalidate).
• Add aria-invalid support under error conditions (thanks, phiw13)
• Documentation tweaks and typos fixes.

Now with the ability to override the language strings that would otherwise be used due to the admin-side language that is in force.

Also, Portuguese (Brasil) Textpack -- thanks , Wagner Brahm.