Caper
Mantle includes Caper from the wp-caper package, providing a fluent interface
for distributing post type, taxonomy, or generic primitive capabilities to roles.
An invocation of Caper takes the form of "<grant to|deny to> <these roles>
<these capabilities>":
use Alley\WP\Caper;
Caper::grant_to( 'editor' )->primitives( 'edit_theme_options' );
Caper::deny_to( 'administrator' )->primitives( 'manage_options' );
Caper::grant_to( 'author' )->caps_for( 'page' );
Caper::deny_to( 'editor' )->caps_for( 'category' );