Merge branch stable-2.13

* stable-2.13:
  Build with API version 2.13

Change-Id: I681fd49d49e9fb8d83723d63839b7c77fcd25f3f
tree: b8a25cb7265547ad8c8b0d8489fa549573c864de
  1. lib/
  2. src/
  3. .buckconfig
  4. .gitignore
  5. BUCK
  6. LICENSE
  7. pom.xml