Small mistake in the code

Hi, thank you for developing this plugin, its function is pretty simple but it’s the only one I found that work. However, when I installed it, it set the featured picture only for very few posts (even though I had hundreds of posts that qualified). I decided to have a look at the source code and found this in includes/class-set-featured-images.php (frome line 60):

	private function get_posts() {
		$post_args = array(
			'post_type' => $this->post_types,
			'nopaginag' => true,
		);

		return new \WP_Query( $post_args );
	}

Because of the typo, the parameter nopaginag is not recognized and the code is executed for the first ten posts or so. I changed it to nopaging and it worked fine.