Alpha channels in colors are no longer stripped. If you want the alpha channels stripped still, either do so manually or change the classes you are using to use the opacity modifier syntax with the opacity set to 100 e.g. from bg-primary to bg-primary/100.
The types this plugin used for tailwind's config are no longer exported. Use tailwind's types instead.
The plugin will no longer add the prefix to any theme or default classes because they are base styles (more details here).