title: App store app submission from Xcode 8.2.1
body: <p>We have an app from the client which is written in Obj-c and includes Swift submodules written in Swift 2.3.
  As of now, I am running it on Xcode 8.2.1. By May 15, 2017, Apple has made it mandatory to upload app from Xcode 8.3.1 or above. 
  I may have converted the Swift 2.3 files to Swift 3, but since they are submodules of external framework, these files are locked.
  My query is can I upload app by this week using Xcode 8.2.1 or do I requires version above that?</p>