That type of response probably won't get too many people rushing to your GitHub that you are suggesting here people should try out. To answer his question, it appears it allows you to manually add/choose a emoji on a site by site basis. As of December it looks like you can now set differently for different subdomains or other variations. Also appears to offer some suggested options to choose from for popular sites.
Oh come on. Generating graphs of the rocket's vertical position and angular deflection from vertical over time, using a video analysis and physics modeling package, is not analysis? Sure, having the actual telemetry data from the rocket would be better, but suppose you were a competitor to SpaceX and wanted to understand what their capabilities were and whether this approach is feasible, this is exactly the sort of investigation you'd want to do.