release v1.6.0

fix yaml (GoogleContainerTools#1610)

release notes for v1.5.1 (GoogleContainerTools#1589)

* release notes for v1.5.1

* release notes for v1.5.1

Release v1.5.0

1.4.0 Release

release v1.13.0 (GoogleContainerTools#1470)

release notes (GoogleContainerTools#1442)

prepare release for v1.1.0 (GoogleContainerTools#1441)

Merge pull request GoogleContainerTools#1388 from tejal29/releaseV1.0.0

prepare for v1.0.0 release

Merge pull request GoogleContainerTools#1328 from jonjohnsonjr/artifa…

…ct-registry

Add pkg.dev to automagic config file population