Cannot change gulp-imagemin options

[SergiArias]

I tried all the documentation (gulp-imagemin) options with no satisfaction. I even put verbose with no luck.

This is the code:

const pngquant = require('imagemin-pngquant');

 gulp.task('images', () => {
  return gulp.src('app/images/**/*')
    .pipe($.cache($.imagemin(
      [pngquant({quality: '50'})], {verbose: true}
    )))
    .pipe(gulp.dest('dist/images'));
});

I don't know if it's a bug or my own lack of expertise, so please, if it's not an issue tell me and I will post it where it belongs.

[UlisesGascon]

I assume that this bug was fixed in #737. If not we can re-open it again 😃