## Relaxation progress indicator

You can use the `CarrotSearchFoamTree.relaxationProgress` utility to show the progress of visualization layout computation. You will need to pass a reference to the HTML element to be used as the progress indicator. The utility will vary the width of the element from `0%` to `100%` to reflect the relaxation progress.

Observe that the relaxation progress is not always monotonous, the progress bar can retract several times, but it should finally reach 100%. Currently, relaxation progress is only reported when relaxation is made visible by setting the `relaxationVisible` option to `true`.

#### Experiments

Load data set: tiny | small | large | unbalanced
Maximum relaxation duration: 60s | 10s | 3s.

#### What's in the code?

- HTML and CSS for the relaxation progress indicator.
- Including the `CarrotSearchFoamTree.relaxationProgress` script and using it to initialize the relaxation progress indicator.
- Setting FoamTree to show the relaxation process.