BSF_Update_Manager::__construct()

		public function __construct() {
			// update data to WordPress's transient.
			add_filter(
				'pre_set_site_transient_update_plugins',
				array(
					$this,
					'brainstorm_update_plugins_transient',
				)
			);
			add_filter( 'pre_set_site_transient_update_themes', array( $this, 'brainstorm_update_themes_transient' ) );

			// display changelog in update details.
			add_filter( 'plugins_api', array( $this, 'bsf_get_plugin_information' ), 10, 3 );

			// display correct error messages.
			add_action( 'load-plugins.php', array( $this, 'bsf_update_display_license_link' ) );

			add_filter( 'upgrader_pre_download', array( $this, 'modify_download_package_message' ), 20, 3 );

			add_action( 'bsf_get_plugin_information', array( $this, 'plugin_information' ) );
		}