Just another contact form plugin. Simple but flexible.
About Parent Category Toggler
This update adds compatibility with WordPress 4.8 and includes some bug fixes and improvements.Screenshots

Frequently asked questions
What does the Parent Category Toggler plugin do?
The Parent Category Toggler plugin automatically toggles the parent categories when a sub category is selected.
Who is the author of the Parent Category Toggler plugin?
The author of the Parent Category Toggler plugin is Ben Lobaugh (blobaugh).
What is the latest version of the plugin mentioned?
The latest version mentioned is 1.3.4, which includes compatibility updates for WordPress 4.8.
Does this plugin work with custom post types?
Yes, version 1.3.2 updated the plugin to only load assets on post (CPT included) new/edit pages in wp-admin.
Can I control which taxonomies the plugin affects?
Yes, version 1.2 added a filter named super_category_toggler to control which taxonomies will automatically toggle.