NewCountingSpinner creates a new CountingSpinner.

NewDefaultCountingSpinner creates a new CountingSpinner with the default configuration.

NewDefaultSpinner creates a new Spinner with the default configuration.

NewDefaultSpinnerGroup creates a new SpinnerGroup with the default configuration.

NewDefaultTaskSpinner creates a new TaskSpinner with the default configuration.

NewSpinner creates a new Spinner.

NewSpinnerGroup creates a new SpinnerGroup from the given CountingSpinner.

NewTaskSpinner creates a new TaskSpinner.

Writer TODO(peter): document.

ErrorsByError compares error objects by their Error() value.