Update version

info.xml

@@ -16,10 +16,10 @@
     <email>mjw@mjwconsult.co.uk</email>
   </maintainer>
   <releaseDate>2023-09-22</releaseDate>
-  <version>6.9.4</version>
+  <version>6.10-dev</version>
   <develStage>stable</develStage>
   <compatibility>
-    <ver>5.58</ver>
+    <ver>5.64</ver>
   </compatibility>
   <comments>Original Author: Joshua Walker (drastik) - Drastik by Design.
     Jamie Mcclelland (ProgressiveTech) did a lot of the 5.x compatibility work.

mixin/smarty-v2@1.0.1.mixin.php

-<?php
-
-/**
- * Auto-register "templates/" folder.
- *
- * @mixinName smarty-v2
- * @mixinVersion 1.0.1
- * @since 5.59
- *
- * @param CRM_Extension_MixInfo $mixInfo
- *   On newer deployments, this will be an instance of MixInfo. On older deployments, Civix may polyfill with a work-a-like.
- * @param \CRM_Extension_BootCache $bootCache
- *   On newer deployments, this will be an instance of MixInfo. On older deployments, Civix may polyfill with a work-a-like.
- */
-return function ($mixInfo, $bootCache) {
-  $dir = $mixInfo->getPath('templates');
-  if (!file_exists($dir)) {
-    return;
-  }
-
-  $register = function() use ($dir) {
-    // This implementation has a theoretical edge-case bug on older versions of CiviCRM where a template could
-    // be registered more than once.
-    CRM_Core_Smarty::singleton()->addTemplateDir($dir);
-  };
-
-  // Let's figure out what environment we're in -- so that we know the best way to call $register().
-
-  if (!empty($GLOBALS['_CIVIX_MIXIN_POLYFILL'])) {
-    // Polyfill Loader (v<=5.45): We're already in the middle of firing `hook_config`.
-    if ($mixInfo->isActive()) {
-      $register();
-    }
-    return;
-  }
-
-  if (CRM_Extension_System::singleton()->getManager()->extensionIsBeingInstalledOrEnabled($mixInfo->longName)) {
-    // New Install, Standard Loader: The extension has just been enabled, and we're now setting it up.
-    // System has already booted. New templates may be needed for upcoming installation steps.
-    $register();
-    return;
-  }
-
-  // Typical Pageview, Standard Loader: Defer the actual registration for a moment -- to ensure that Smarty is online.
-  \Civi::dispatcher()->addListener('hook_civicrm_config', function() use ($mixInfo, $register) {
-    if ($mixInfo->isActive()) {
-      $register();
-    }
-  });
-
-};