gradleVersion = '3.5.1';

kotlinOptions {
    languageVersion = '1.2'
    apiVersion = '1.2'
}

build.gradle

@@ -29,26 +29,34 @@ def signingKeyId = hasProperty('signingKeyId') ? project.signingKeyId : ''
 def signingPassword = hasProperty('signingPassword') ? project.signingPassword : ''
 def signingSecretKeyRingFile = hasProperty('signingSecretKeyRingFile') ? project.signingSecretKeyRingFile : ''
 
+task wrapper(type: Wrapper) {
+    gradleVersion = '3.5.1'
+}
+
+defaultTasks 'clean', 'build'
+
 apply plugin: 'kotlin'
 apply plugin: 'org.jetbrains.dokka'
 apply plugin: 'maven'
 apply plugin: 'signing'
 
-defaultTasks 'clean', 'build'
-
-task wrapper(type: Wrapper) {
-    gradleVersion = '3.3'
+license {
+    header rootProject.file('copyright.ftl')
+    strictCheck true
+    ext.inceptionYear = 2016
+    ext.year = Calendar.getInstance().get(Calendar.YEAR)
+    ext.owner = 'Vyacheslav Lukianov'
+    ext.ownerURL = 'https://github.com/penemue'
+    include "**/*.kt"
+    mapping {
+        kt = 'JAVADOC_STYLE'
+    }
 }
 
 repositories {
     jcenter()
 }
 
-dependencies {
-    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-    testCompile group: 'junit', name: 'junit', version: '4.12'
-}
-
 test {
     // uncomment the following line in order to test mergeSort instead of timSort
     //jvmArgs = ['-Djava.util.Arrays.useLegacyMergeSort=true']
@@ -62,16 +70,27 @@ jmh {
     forceGC = true
 }
 
-license {
-    header rootProject.file('copyright.ftl')
-    strictCheck true
-    ext.inceptionYear = 2016
-    ext.year = Calendar.getInstance().get(Calendar.YEAR)
-    ext.owner = 'Vyacheslav Lukianov'
-    ext.ownerURL = 'https://github.com/penemue'
-    include "**/*.kt"
-    mapping {
-        kt = 'JAVADOC_STYLE'
+dependencies {
+    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    testCompile group: 'junit', name: 'junit', version: '4.12'
+}
+
+compileKotlin {
+    kotlinOptions {
+        languageVersion = '1.2'
+        apiVersion = '1.2'
+    }
+}
+compileTestKotlin {
+    kotlinOptions {
+        languageVersion = '1.2'
+        apiVersion = '1.2'
+    }
+}
+dokka {
+    jdkVersion = 7
+    packageOptions {
+        reportUndocumented = false
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,5 @@
-#Sun Mar 19 19:28:44 MSK 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.5.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-bin.zip

gradlew

@@ -33,11 +33,11 @@ DEFAULT_JVM_OPTS=""
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -155,7 +155,7 @@ if $cygwin ; then
 fi
 
 # Escape application args
-save ( ) {
+save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }