[maven-release-plugin] copy for tag gson-parent-2.9.0

[maven-release-plugin] copy for tag gson-parent-2.8.9

[maven-release-plugin] copy for tag gson-parent-2.8.8

[maven-release-plugin] copy for tag gson-parent-2.8.7

[maven-release-plugin] copy for tag gson-parent-2.8.6

[maven-release-plugin] copy for tag gson-parent-2.8.5

[maven-release-plugin] copy for tag gson-parent-2.8.4

[maven-release-plugin] copy for tag gson-parent-2.8.3

[maven-release-plugin] copy for tag gson-parent-2.8.2

[maven-release-plugin] copy for tag gson-parent-2.8.1