functions.php

<?php 
/**
 * Functions
 * 
 * @package Cata
 * @since   0.1.0
 */

if ( ! function_exists( 'cata_after_setup_theme' ) ) :
	/**
	 * After Setup Theme
	 */
	function cata_after_setup_theme() {

		add_theme_support( 'align-wide' );
		add_theme_support( 'automatic-feed-links' );

		$html5_options = array(
			'caption',
			'comment-form',
			'comment-list',
			'gallery',
			'search-form',
			// storefront has this, but why?
			'widgets',
		);

		/**
		 * Theme Supports Editor Styles
		 * 
		 * @todo add other aspects of block editor support.
		 * @link https://developer.wordpress.org/block-editor/developers/themes/theme-support/
		 */
		add_theme_support( 'editor-styles' );

		add_theme_support( 'html5', $html5_options );
		add_theme_support( 'responsive-embeds' );
		add_theme_support( 'title-tag' );

		remove_theme_support( 'core-block-patterns' );
	}
endif;
add_action( 'after_setup_theme', 'cata_after_setup_theme' );

/**
 * Autoload
 * Register our autoloader.
 */
require_once get_template_directory() . '/includes/autoload.php';

/**
 * Bootstrap
 * Initialize classes we need to load.
 */
require_once get_template_directory() . '/includes/bootstrap.php';