Merge remote-tracking branch 'gw/R8_fix' 

[maven-release-plugin] copy for tag moshi-parent-1.9.3 

[maven-release-plugin] copy for tag moshi-parent-1.9.2 

[maven-release-plugin] copy for tag moshi-parent-1.9.1 

[maven-release-plugin] copy for tag moshi-parent-1.9.0 

[maven-release-plugin] copy for tag moshi-parent-1.8.0 

[maven-release-plugin] copy for tag moshi-parent-1.7.0 

[maven-release-plugin] copy for tag moshi-parent-1.6.0 

[maven-release-plugin] copy for tag moshi-parent-1.6.0-RC1 

[maven-release-plugin] copy for tag moshi-parent-1.5.0