v0.5.20 add get_email_template_used_by and update push_lead
Thanks to @petrklus for contributing a method for get_email_template_used_by .
Thanks to @suhaibwangdemck for fixing push_lead (made lookupField optional)
Thanks to @petrklus for contributing a method for get_email_template_used_by .
Thanks to @suhaibwangdemck for fixing push_lead (made lookupField optional)