Added stash_prune hooks

Author: croxton

README.md

@@ -1,6 +1,6 @@
 ##Stash
 
-![Release](https://img.shields.io/badge/release-2.6.8-brightgreen.svg)
+![Release](https://img.shields.io/badge/release-2.6.9-brightgreen.svg)
 
 This is the development version of Stash. Test thoroughly before using in production.
 

system/expressionengine/third_party/stash/config.php

@@ -2,7 +2,7 @@
 if (! defined('STASH_VER'))
 {
     define('STASH_NAME', 'Stash');
-    define('STASH_VER',  '2.6.7');
+    define('STASH_VER',  '2.6.9');
     define('STASH_AUTHOR',  'Mark Croxton');
     define('STASH_DOCS',  'http://github.com/croxton/Stash/');
     define('STASH_DESC',  'Stash: save text and code snippets for reuse throughout your templates.');

system/expressionengine/third_party/stash/models/stash_model.php

@@ -531,6 +531,14 @@ function prune_keys()
             'expire !=' => '0'
         ));
 
+        // -------------------------------------
+        // 'stash_prune' hook
+        // -------------------------------------
+        if ($this->EE->extensions->active_hook('stash_prune') === TRUE)
+        {
+            $this->EE->extensions->call('stash_prune', $query->result_array());
+        }
+
         if ($query->num_rows() > 0) 
         {
             if ($deleted = $this->delete_cache($query->result(), TRUE, 0, FALSE))