Merge branch 'stable-3.1' into master

* stable-3.1:
  Bump Bazel version to 3.7.0
  Upgrade bazlets to latest stable-3.0 to build with 3.0.13 API

Change-Id: I09400113aa7ce2495810ec84d70cc83250ef26a1
tree: e694e7643481145157eb872268245e3f9e39a1dc
  1. .settings/
  2. src/
  3. .bazelignore
  4. .bazelversion
  5. BUILD
  6. LICENSE
  7. bazlets.bzl