Changelog for 6.4.1

• Updated links to documentation.

Changelog for 6.4.0

• Added post-author and post-author-only cases for role option (props to @agenziae20 for the suggestion).
• Underscore (_) is changed into a dash (-) when building the CSS class.

Changelog for 6.3.1

• Added new link to plugin line in the WordPress plugins management page.
• Updated compatibility to WordPress 5.6.

Changelog for 6.3

• Added support for user IDs in recipient option.

Changelog for 6.2

• Added support for custom HTML classes and HTML IDs.
• Added reverse option for custom roles.
• Convert user-entered custom roles into lowercase.
• Added case visitor which is equivalent to visitor-only.
• Administrators can read hidden texts for Visitors.

Changelog for 6.1

• Added use of multiple custom roles.
• Added a new filter when there is no text to be displayed.
• Added a new filter for hidden text.
• Added a new filter for alternate text.
• Now Administrators can always read text for custom roles, unless a role="custom-only" option has been used.
• Code optimization.

Changelog for 6.0

• Added use of custom roles.

Changelog for 5.1

• Changed the coding paradigm to OOP.

Changelog for 5.0

• Added reverse option to change the logic of the recipient option.

Changelog for 4.4

• Checked code against PHPCS.