memory_limit issue on 10k+ users

The insert_button function in KBJ_UserShortcodesPlus_Admin_TinyMCE_AddShortcodeButton caused a memory_limit issue, if too much users are in the system.

The get_users() request needs about 512MB in our system for about 13k users.
Can you please update the function to load the users chunked or limit the users?

I made the following changes in our system to prevent the memory_limit error:

public function insert_button($context) {
	global $pagenow;
	if(!in_array($pagenow, array('post.php', 'post-new.php'))) {
		return $context;
	}
	add_thickbox();
	$users = array();
	$page = 0;
	do {
		$page++;
		$users_chunk = get_users(array('number' => 3000, 'paged' => $page));
		if(is_array($users_chunk) && count($users_chunk)) {
			$users = array_merge($users, array_map(function($user) {
				return json_decode('{"ID":"'.$user->ID.'", "display_name": "'.str_replace('"', '\"', $user->display_name).'"}');
			}, $users_chunk));
		}
	} while(is_array($users_chunk) && count($users_chunk));
	$data = array(
		'button_text' => __('Add User Shortcode', ''),
		'users' => $users,
		'shortcodes' => KBJ_UserShortcodesPlus::config('Shortcodes'),
	);
	return KBJ_UserShortcodesPlus::template('admin-tinymce-modal.html.php', $data);
}