3.1.0

Release 3.1.0 (2020-04-21)

Baseline: 17ebbf1

Cherry picks:

• 71fb56b:
  Suppress last-ditch download exceptions w/cleanup
• fd60614:
  In repo rules, don't warn about generator_* attributes being
  non-canonical
• 2a37279:
  Refactor configureFeatures and prevent NPE
• 777a6ee:
  Automated rollback of commit
  0bbe381.
• 2ee53c9:
  Guard parseActionResultMetadata with bulk wrapper

Release notes: https://blog.bazel.build/2020/04/21/bazel-3-1.html

Notice: Bazel installers contain binaries licensed under the GPLv2 with
Classpath exception. Those installers should always be redistributed along with
the source code.

Some versions of Bazel contain a bundled version of OpenJDK. The license of the
bundled OpenJDK and other open-source components can be displayed by running
the command bazel license. The vendor and version information of the bundled
OpenJDK can be displayed by running the command bazel info java-runtime.
The binaries and source-code of the bundled OpenJDK can be
downloaded from our mirror server.

Security: All our binaries are signed with our
public key 3D5919B448457EE0.