title: Versioning my own Android Libraries
body: <p>I'm currently developing a custom library for Android.</p>
  
  <p>My idea is to have a version for the app (I'm currently setting it in de build.gradle file and it works fine), and a different version for the library.</p>
  
  <p>Is there a best practice in order to achieve this without having the two build.gradle files merged together?</p>
  
  <p>I found a couple of similar questions on SO but they were 4 years old and not very helpful.</p>