Merge branch 'stable-2.13'

* stable-2.13:
  Build with API version 2.13-rc1
  Fix Implementation-URL in manifest

Change-Id: I345cecbb2c0f794b54d37f86b8b2520fe91c3122
tree: aa5e12f262692745df322d9df10cfd18744d11f9
  1. .buckconfig
  2. .gitignore
  3. BUCK
  4. lib/
  5. src/