exclude wp-c/cache and wp-c/uploads as some major themes save page-sp…

…ecific CSS there

classes/autoptimizeConfig.php

@@ -285,7 +285,7 @@ public function show() {
 </tr>
 <tr valign="top" class="<?php echo $hiddenClass;?>ao_adv css_sub">
 <th scope="row"><?php _e('Exclude CSS from Autoptimize:','autoptimize'); ?></th>
-<td><label><input type="text" style="width:100%;" name="autoptimize_css_exclude" value="<?php echo get_option('autoptimize_css_exclude','admin-bar.min.css, dashicons.min.css'); ?>"/><br />
+<td><label><input type="text" style="width:100%;" name="autoptimize_css_exclude" value="<?php echo get_option('autoptimize_css_exclude','wp-content/cache/, wp-content/uploads/, admin-bar.min.css, dashicons.min.css'); ?>"/><br />
 <?php _e('A comma-separated list of CSS you want to exclude from being optimized.','autoptimize'); ?></label></td>
 </tr>
 </table>
@@ -622,7 +622,7 @@ public function get($key) {
                 'autoptimize_js_include_inline' => 0,
                 'autoptimize_js_forcehead' => 0,
                 'autoptimize_css' => 0,
-                'autoptimize_css_exclude' => "admin-bar.min.css, dashicons.min.css",
+                'autoptimize_css_exclude' => "admin-bar.min.css, dashicons.min.css, wp-content/cache/, wp-content/uploads/",
                 'autoptimize_css_justhead' => 0,
                 'autoptimize_css_include_inline' => 1,
                 'autoptimize_css_defer' => 0,