pass version information to goreleaser

Added support for version

Update README.md file

Merge branch 'apigee:main' into main

Add support for allow_missing in updates of projects, APIs, and versi…

…ons (apigee#379)

* Add allow_missing fields to project, API, and version update request messages.
* Update generated proto code.
* Add allow_missing support to projects, APIs, and versions
* Add tests for allow_missing in project, API, and version updates.
* Add locks to address race conditions in allow_missing updates.

Add an accessor to the Admin GAPIC providing the underlying gRPC clie…

…nt. (apigee#375)

Update reference to gnostic from googleapis/gnostic to google/gnostic (…

…apigee#374)

Run "goimports -w ./.." to normalize code formatting. (apigee#371)

* Run "goimports -w ./.." to normalize code formatting.
* Add "make format" to Makefile
* Update Makefile to format generated code, check in formatted code

Move admin-only RPCs into a separate Admin service. (apigee#354)

Implement Spectral Linter Plugin according to new Plugin Architecture (…

…apigee#361)