Merge branch 'stable-3.0' into stable-3.1

* stable-3.0:
  Bump Bazel version to 3.0.0
  Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
  Upgrade bazlets to latest stable-2.16

Change-Id: I7a9d754bc6d4834315d5fe4d728cfa36e26ac926
tree: b79551432d996c92c5a0013464c6997d444bbcc1
  1. src/
  2. BUILD
  3. LICENSE