v1.4.0 of Mux Player for Android adds improvements to its integration with Mux Data. It can now automatically record the resolution of your Player View in most cases, and we added a method to update your Mux Customer Data at any time. We had to make a couple of internal changes to `MuxPlayer` (implementing `Player` instead of `ExoPlayer`), which should be fine for most people. However, if you happened to be typing your references for the player as `ExoPlayer` (rather than `MuxPlayer` or even `Player`), this will no longer work (and was not fully supported).