Fatal error: Uncaught Error: [] operator not supported for strings – PHP 7.1

Thanks for reporting this.

Regarding the class attribute: This is not a bug of this module. Class must be an array as specified in the core documentation of theme_link function: https://api.drupal.org/api/drupal/includes%21theme.inc/function/theme_link/7.x

class: must be declared in an array. Example: 'class' => array('class_name1','class_name2').

I prefer not to "babysit" other modules/themes which does not follow documentation.

However I will take a look at the second problem (tabindex), which seems valid.

Committed and fixed the problem with tabindex. Thanks all!

I plan to roll-out a new release with few fixes from today soon.

Automatically closed - issue fixed for 2 weeks with no activity.