2.0.0

• Rewritten for improved performance.
• Now requires PHP 7.2 or later.
• Now requires WP 5.5 or later because it adds tests against PHP support.
• All function and class names have changed due to added namespacing, hence the major version bump.
• Added filter cw_emoji_overrides, accepts array [ 'default' => string 1|0, 'force_support' => ?bool ].
• Removed confusing filter the_emoji_options.
• Changed the option label from "Enable emoji support" to "Enable emoji conversion": this plugin prevents the conversion; it does not prevent actual emojis from being stored and printed.