Merge branch 'stable-2.13'

* stable-2.13:
  Format all Java files with google-java-format

Change-Id: I95ae0817458bed8692e095ab768293837e49eeb2
tree: ac7496f8cce503c986173f0fd9b52647dfa4103a
  1. .buckconfig
  2. .gitignore
  3. .mailmap
  4. BUCK
  5. lib/
  6. src/