Downgrade dokka

Version 0.9.15 is producing an error on CI:
- Could not find org.jetbrains.dokka:integration:0.9.15.

build.gradle

@@ -18,6 +18,7 @@ plugins {
 apply plugin: 'kotlin-platform-common'
 apply plugin: 'maven-publish'
 apply plugin: 'net.researchgate.release'
+apply plugin: 'org.jetbrains.dokka'
 
 description = 'A Result monad for modelling success or failure operations.'
 
@@ -31,6 +32,18 @@ dependencies {
     testCompile "org.jetbrains.kotlin:kotlin-test-common:$kotlinVersion"
 }
 
+dokka {
+    outputFormat = 'javadoc'
+    outputDirectory = "$buildDir/docs"
+}
+
+task javadocJar(type: Jar, dependsOn: dokka) {
+    group = LifecycleBasePlugin.BUILD_GROUP
+    description = 'Assembles a jar archive containing the Javadoc API documentation.'
+    classifier = 'javadoc'
+    from dokka.outputDirectory
+}
+
 task sourcesJar(type: Jar) {
     group = LifecycleBasePlugin.BUILD_GROUP
     description = 'Assembles a jar archive containing the main classes with sources.'
@@ -41,6 +54,7 @@ task sourcesJar(type: Jar) {
 publishing {
     publications {
         mavenJava(MavenPublication) {
+            artifact javadocJar
             artifact sourcesJar
         }
     }

gradle.properties

@@ -1,7 +1,7 @@
 group=com.github.michaelbull.kotlin-result
 version=1.0.3-SNAPSHOT
 
-dokkaVersion=0.9.15
+dokkaVersion=0.9.14
 gradleReleaseVersion=2.6.0
 hamkrestVersion=1.4.2.0
 junitVersion=4.12

jvm/build.gradle

@@ -1,5 +1,4 @@
 apply plugin: 'kotlin-platform-jvm'
-apply plugin: 'org.jetbrains.dokka'
 
 repositories {
     mavenCentral()
@@ -13,23 +12,10 @@ dependencies {
     testCompile "org.jetbrains.kotlin:kotlin-test:$kotlinVersion"
 }
 
-dokka {
-    outputFormat = 'javadoc'
-    outputDirectory = "$buildDir/docs"
-}
-
-task javadocJar(type: Jar, dependsOn: dokka) {
-    group = LifecycleBasePlugin.BUILD_GROUP
-    description = 'Assembles a jar archive containing the Javadoc API documentation.'
-    classifier = 'javadoc'
-    from dokka.outputDirectory
-}
-
 publishing {
     publications {
         mavenJava(MavenPublication) {
             from components.java
-            artifact javadocJar
         }
     }
 }