message: trust region example update
diff: @@ -53,10 +53,10 @@ fn run() -> Result<(), Error> {
  let cost = MyProblem {};
  // definie inital parameter vector
  - let init_param: Array1<f64> = Array1::from_vec(vec![1.2, 1.2]);
  - // let init_param: Array1<f64> = Array1::from_vec(vec![-1.2, 1.0]);
  + // let init_param: Array1<f64> = Array1::from_vec(vec![1.2, 1.2]);
  + let init_param: Array1<f64> = Array1::from_vec(vec![-1.2, 1.0]);
  - let iters = 10;
  + let iters = 30;
  let mut solver = TrustRegion::new(Box::new(cost), init_param);
  solver.set_max_iters(iters);
  solver.add_logger(ArgminSlogLogger::term_noblock());
  