[maven-release-plugin] prepare release perf4j-0.9.16

[maven-release-plugin] copy for tag perf4j-0.9.15

[maven-release-plugin] copy for tag perf4j-0.9.14

Tagging for 0.9.13 release

tagging 0.9.12 release

tag for 0.9.11 release

tagging 0.9.10 release

tagged 0.9.9 release

prepare for 0.9.8.1 release

tagging 0.9.8.1 release