Update Gradle to 2.13

Author: JLLeitschuh

build.gradle

@@ -17,7 +17,7 @@ plugins {
     id 'eclipse'
     id 'jacoco'
     id 'com.google.osdetector' version '1.4.0'
-    id 'com.github.johnrengelman.shadow' version '1.2.2'
+    id 'com.github.johnrengelman.shadow' version '1.2.3'
 }
 apply plugin: 'nebula-aggregate-javadocs'
 
@@ -371,5 +371,5 @@ task jacocoRootReport(type: JacocoReport, group: 'Coverage reports') {
 check.dependsOn jacocoRootReport
 
 task wrapper(type: Wrapper) {
-    gradleVersion = '2.10'
+    gradleVersion = '2.13'
 }

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
-#Mon Jan 04 19:05:21 EST 2016
+#Thu May 12 15:14:42 EDT 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.13-bin.zip