Execute callbacks.
@param {Object or Function} args - The callback args
@param {string[]} depsNotFound - List of dependencies not found
function executeCallbacks(args, depsNotFound) {
	      // accept function as argument
	      if (args.call) args = {
	        success: args
	      }; // success and error callbacks

	      if (depsNotFound.length) (args.error || devnull)(depsNotFound);else (args.success || devnull)(args);
	    }