chore: release 1.7.1

[release-please]

🤖 I have created a release *beep* *boop*

1.7.1 (2019-11-13)

Dependencies

• update gax.version to v1.50.1 (#72) (eb44a19)

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This PR was generated with Release Please.

[codecov]

Codecov Report

Merging #74 into master will decrease coverage by 0.03%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master      #74      +/-   ##
============================================
- Coverage     81.33%   81.29%   -0.04%     
  Complexity      937      937              
============================================
  Files            95       95              
  Lines          5849     5842       -7     
  Branches        325      325              
============================================
- Hits           4757     4749       -8     
- Misses          916      917       +1     
  Partials        176      176

Impacted Files	Coverage Δ	Complexity Δ
...om/google/cloud/bigtable/emulator/v2/Emulator.java	60% <0%> (-0.87%)	14% <0%> (ø)
...ble/data/v2/stub/EnhancedBigtableStubSettings.java	93.49% <0%> (-0.26%)	17% <0%> (ø)

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[yoshi-automation]

Release is at https://github.com/googleapis/java-bigtable/releases/tag/v1.7.1

[yoshi-automation]

The release build has started, the log can be viewed here. 🌻

[yoshi-automation]

🥚 You hatched a release! The release build finished successfully! 💜