Reintroducing Ceilingbounce - flashlight testing and runtime graphs for Android

In 2015, I wrote an Android app for flashlight reviewers. If you read or watch many flashlight reviews, you've probably seen graphs with a black background and a yellow line generated by Ceilingbounce. Unfortunately, the tools used to build it were abandoned by the volunteers who created them, and soon after became incompatible with the current state of Android. I couldn't release updates, and…