Release v1.48.2

[chingor13]

This pull request was generated using releasetool.

09-27-2019 07:09 PDT

Implementation Changes

• Fix Race condition when shutting down executor/transport channel (#787)
• Expose Batcher#sendOutstanding to provide async batch flushing (#786)

Dependencies

• make opencensus consistent (#794)
• update google-auth-library to 0.17.2 (#789)
• Update opencensus, guava, and Truth (#788)
• Update to Guava 28.1 (#791)

Internal / Testing Changes

• Update repository_rules.bzl (#730)

[codecov]

Codecov Report

Merging #795 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #795   +/-   ##
=========================================
  Coverage     78.39%   78.39%           
  Complexity     1106     1106           
=========================================
  Files           198      198           
  Lines          4887     4887           
  Branches        385      385           
=========================================
  Hits           3831     3831           
  Misses          887      887           
  Partials        169      169

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[elharo]

#786 added public API. Consequently this should be 1.49.0 per semver.