git: openjdk/shenandoah-visualizer: master: Sample screenshot

[duke]

Changeset: c097e6a5
Author:    Aleksey Shipilev <shade at redhat.com>
Date:      2020-11-16 20:17:47 +0000
URL:       https://github.com/openjdk/shenandoah-visualizer/commit/c097e6a5

Sample screenshot

+ sample-screenshot.png