headway

headway is a small Go library to track the progress of tasks.

It is developed for internal use, I don't intend to take pull requests.

It contains:

• ewma: an exponential weighted moving average
• united: formatting routines for bytes
• state: a set of callbacks for log messages & progresses
• probar: a CLI progress bar
• counter: counting wrappers for io.Reader and io.Writer
• tracker: a speed/ETA estimator for task progress