chore: draft v0.18.0 release (#940)

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Release History
 
+### v0.18.0 / 2021-12-06
+- add `parent` to method signature for `Messaging.SearchBlurbs()`
+- update `RELEASING.md` instructions
+
 ### v0.17.0 / 2021-11-02
 - Implement server streaming RPCs over REST, using chunked encoding.
 - Implement RPCs that map to PUT and PATCH HTTP verbs

README.md

@@ -19,12 +19,12 @@ page, or simply by installing from source using go.
 
 ### Docker
 ```sh
-$ docker pull gcr.io/gapic-images/gapic-showcase:0.17.0
+$ docker pull gcr.io/gapic-images/gapic-showcase:0.18.0
 $ docker run \
     --rm \
     -p 7469:7469/tcp \
     -p 7469:7469/udp \
-    gcr.io/gapic-images/gapic-showcase:0.17.0 \
+    gcr.io/gapic-images/gapic-showcase:0.18.0 \
     --help
 > Root command of gapic-showcase
 >
@@ -51,7 +51,7 @@ $ docker run \
 
 ### Binary
 ```sh
-$ export GAPIC_SHOWCASE_VERSION=0.17.0
+$ export GAPIC_SHOWCASE_VERSION=0.18.0
 $ export OS=linux
 $ export ARCH=amd64
 $ curl -L https://github.com/googleapis/gapic-showcase/releases/download/v${GAPIC_SHOWCASE_VERSION}/gapic-showcase-${GAPIC_SHOWCASE_VERSION}-${OS}-${ARCH}.tar.gz | sudo tar -zx --directory /usr/local/bin/

cmd/gapic-showcase/version.go

@@ -18,7 +18,7 @@ func init() {
 	// Make roots version option only emit the version. This is used in Actions.
 	// The template looks weird on purpose. Leaving as a single line causes the
 	// output to append an extra character.
-	rootCmd.Version = "0.17.0"
+	rootCmd.Version = "0.18.0"
 	rootCmd.SetVersionTemplate(
 		`{{printf "%s" .Version}}`)
 }

util/cmd/bump_version/main.go

@@ -30,7 +30,7 @@ import (
 )
 
 const currentAPIVersion = "v1beta1"
-const currentReleaseVersion = "0.17.0"
+const currentReleaseVersion = "0.18.0"
 
 // This script updates the release version or API version of files in gapic-showcase.
 // This script is used on API and release version bumps. This script must be run in