Normally I use the android-change-log library to integrate a changelog system in my apps, but I think it's already very obsolete, it does not correspond to the Material Design guidelines.
Can you force the dialog box you use, be it Material Design and not the archaic Holo Dialog ?
I do not integrate the code since it would be very extensive, but you can visualize it in your GitHub here
You can leave comments if you know another library or better solution.