Android 7.0 Nougat introduced tons of new functionality to Android, and many of those new things aren't seen by every day users. In fact many of the biggest changes to Android have to do with how developers make apps for the OS, including new APIs for 3D applications and plenty more. One of the cool new things that can be added for just about every type of user, however, are custom quick tiles. These quick tiles, found when pulling the notification shade down twice, normally allow for things like fast changing of WiFi connection points, connecting or disconnecting from your Bluetooth device, or toggling the rear LED flash on your phone so it can be used as a flashlight.
Many developers need to test animations before rolling out their apps, and in the past this has been an irritating and overly complicated process of going into settings, developer options, selecting animation speed and dropping or raising the speed accordingly. Now all this nonsense is just a single button press away for developers (or users) who want such convenience and power, but it's not without a little bit of initial installation tasks. Developer Nick Butcher has setup a GitHub location for this very task and allows users (likely only power users and developers) to download the files needed to implement this very set of quick toggles to their notification shade if they so choose to do such a thing.
As this isn't a simple APK installation from the Play Store, you'll actually need to use ADB to connect into your phone and drop some commands to give it the proper permission to act on system functions. These can be found in the read me section of the GitHub listing, and work for both quick toggles available. The first quick toggle is a simple toggle between 0.5x and 1.0x speeds for animator duration and just requires a single click to switch between both options. The other quick toggle will bring up the same system dialog that developer options does and allows you to switch between animation scales 10x, 5x, 2x, 1.5x, 1x, 0.5x and off. Users and developers interested can grab the needed files from the GitHub, and check out the GIF of these toggles in action below.