Ensure all artifacts are built as part of the "release command"

The wiring of tasks does not happen to the extent that I would have expected from the maven-publish plugin, unless I'm doing something wrong here.

build.gradle

@@ -98,6 +98,8 @@ bintray {
     }
 }
 
+tasks.build.dependsOn sources
+
 static def timestamp(Date date) {
     def timestampFormat = new SimpleDateFormat('yyyyMMddHHmmss')
     timestampFormat.timeZone = TimeZone.getTimeZone('UTC')

info.txt

@@ -1,7 +1,7 @@
 Release process:
 - ensure `baseVersion` has correct value in build.gradle
 - Set `dryRun` to false in the `bintray` config in build.gradle
-- Run `gr clean build bintrayUpload -PRELEASE`
+- Run `gr clean build generatePomFileForPluginPublicationPublication bintrayUpload -PRELEASE`
 - Set `dryRun` to true in the `bintray` config in build.gradle
 - Tag release, e.g. `git tag v0.2`, and push the tag
 - update `baseVersion` to next anticipated version in build.gradle