Issue after updating plugin to v1.3

Hi there,

updated plugin to v1.3 and appeared PHP warning.

In v1.3 (addressed low-level content escape vulnerability) you added esc_attr() function https://plugins.trac.www.ads-software.com/browser/plethora-tabs-accordions/tags/1.3/plethoraplugins-tabs.php in line 423 and pass array, but esc_attr() expects string. https://i.imgur.com/5wfme46.png
This causes the PHP warning to appear. https://i.imgur.com/QrAgNgt.png

Please fix this warning in the nearest release. Thanks