Issue #1894772 by amateescu, alberto56: Fixed hook_menu_attribute_info() API example.
Issue #1909564 by opi: Fixed Typo in menu_attributes_menu_attribute_info() comment.
Issue #1761804 by osopolar, quicksketch: Do not add empty classes produced by leading, trailing or double spaces.
Issue #1077426 by cweagans: Followup: Fix permission checks.
Issue #1886014 by Berdir: Fixed Argument 2 passed to _menu_attributes_form_alter() must be an array, null given.
Issue #1151594 by amateescu: Fix hook_form_alter() fatal error by checking the correct form element.
Issue #1077426 by Kevin Quillen, amateescu and Dave Reid: Added permissions.
Issue #863670 by amateescu: Add hook documentation in menu_attributes.api.php
Issue #863654 by amateescu and Dave Reid: Add vertical tabs summaries.
Issue #863658 by amateescu: Write Simpletests and enable automated testing.
Issue #1266456 by amateescu and davereid: Menu attributes does not accept 0 as an access key.
Issue #1200928 by dalin, amateescu: Fixed menu link edit form does not save values for existing menu links since $form['options']['#value']['attributes'] is defined.
Issue #1200932 by dalin, amateescu: Fixed $form['options'] should not get overwritten.
Unify _menu_attributes_form_alter() to not clobber any other attributes or options in the link data.
Issue #1132782: Added update function to fix any menu links that had the class attribute saved as a string rather than an array.
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