Ensure gradle/publish-jar.gradle is consistent (#89)

Author: svc-excavator-bot

gradle/publish-jar.gradle

@@ -1,9 +1,16 @@
+// This file is managed by the excavator 'consistent-publish-jar' check, changes will be overwritten.
 apply plugin: 'com.jfrog.bintray'
 apply plugin: 'nebula.maven-publish'
 apply plugin: 'nebula.maven-resolved-dependencies'
 apply plugin: 'nebula.javadoc-jar'
 apply plugin: 'nebula.source-jar'
 
+jar {
+    manifest {
+        attributes("Implementation-Version" : project.version)
+    }
+}
+
 bintray {
     user = System.env.BINTRAY_USERNAME
     key = System.env.BINTRAY_PASSWORD
@@ -21,4 +28,3 @@ publish.dependsOn bintrayUpload
 bintrayUpload.onlyIf {
     versionDetails().isCleanTag
 }
-