Release gax-java v1.57.0

[chingor13]

This pull request was generated using releasetool.

06-10-2020 15:01 PDT

Implementation Changes

• logging: catch and log exceptions in Watchdog runnable to ensure it never stops running (#1036)
• android: make GaxProperties.version accessible in Android (#1117)
• Make watchdog @BetaApi and watchdog provider implementations @InternalApi (#1119)

New Features

• generalize ExecutorService for transport layers (#1098)
• add setAttemptDirectPath(boolean) for InstantiatingGrpcChannelProvider.Builder (#1015)

Dependencies

• update grpc to 1.30.0, protobuf to 3.12.2 (#1125)
• update api-common-java to 1.92 (#1126)

Internal / Testing Changes

• [gax-java] chore: include only external-facing gax testing utils in testlibJar (#1120)
• ci: Linkage Checker to examine linkage error at artifact level (#1032)
• ci: Adopt GitHub Actions in gax-java: unit tests and linkage monitor (#1062)
• chore: display call settings configuration through toString (#1017)
• test: cleaning up deprecated usages (#858)

[codecov]

Codecov Report

Merging #1127 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1127   +/-   ##
=========================================
  Coverage     78.65%   78.65%           
  Complexity     1170     1170           
=========================================
  Files           204      204           
  Lines          5195     5195           
  Branches        417      417           
=========================================
  Hits           4086     4086           
  Misses          935      935           
  Partials        174      174           

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[yoshi-automation]

Release is at https://github.com/googleapis/gax-java/releases/tag/v1.57.0