1.3.5
Also, PHP 5.4.0 is the minimum required version to activate the plugin. In theory WP PHP Console would have issued fatal errors on hosts where PHP version was < 5.3.0 since it uses Composer and PHP Console library who assumes namespaces and other PHP 5.3 or 5.4 features. However, in those rare chances WP PHP Console is run on ancient PHP versions (WordPress still supports 5.2.4!) the plugin can gracefully refuse to activate to avoid triggering those errors.