title: Git merging sub branches before merging to master
body: <p>I have branch A . I know that it is save but because of some procedures I can't merge it to master branch(in my case it is code review I need to wait some of my colleagues to review my code ).  Now I need to start another feature let say this one is branch B. </p>
  
  <p>Branch B depends on some features that I implemented in branch A. But since I couldn't merge A to master, B does not has this features. </p>
  
  <p>Is it a good idea in my case to merge branch A directly to branch B even before merging A to master? </p>