* Move authorship from individual (JJJ) to business (JJJ)
* Add sponsor.php to add "Sponsor" link to plugin row-actions
* Update donate link, from PayPal to Stripe
* Update support links, for WordPress.org & GitHub
* Bump "Tested up to" to 5.8 if needed
* Increment asset & minor version numbers
* Random small non-code related improvements (whitespace, grammar, URLs...)

Fix compatibility with WP User Profiles

This ensures that custom column contents behave correctly inside of output buffers and other (somewhat predictable) environmental approaches.

This fixes a bug where custom column content would not get returned.

Now accepts a user object or integer ID.

Split wp_set_terms_for_user for bulk/non-bulk contexts

See #16.

Accept `WP_User_Query` args in `wp_get_users_of_group()`

See #14.

Added filter 'wp_user_groups_taxonomy_objects'

This check doesn't seem right here, given how the users bulk actions redirect works.

See #18.

See #18.

Introduce "Managed" taxonomy types, disallowing users to edit their own terms in a specific user taxonomy.

Props @netweb for the nudge on this feature.

Also bump to 2.1.0.

Avoids debug notices.

Also, improve the inline documentation for the function.

Added filter 'wp_user_groups_taxonomy_objects' to allow adding user taxonomy to custom post types if needed.

Fix is_exclusive() behavior

This change introduces a new taxonomy option called `exclusive` that uses radio buttons instead of checkboxes, making a user's entry into a specific group exclusive (joining one will remove them from others.)

Might be more to do here, but this was pretty easy otherwise.

Fixes #11.

This change catches up to a backwards compatibility break in WordPress Admin that caused the "Add New" button to reappear, again.

Fixes #9.

Bump to 1.1.0.