Changed release plugin

build.gradle

@@ -1,21 +1,18 @@
 buildscript {
     repositories {
         mavenCentral()
-        maven {
-            url 'http://maven.tmatesoft.com/content/repositories/releases/'
-        }
     }
 
     dependencies {
-        classpath 'au.com.ish.gradle:release:2.2.2'
+        classpath group: 'pl.allegro.tech.build', name: 'axion-release-plugin', version: '1.3.4'
     }
 }
 
 apply plugin: 'groovy'
 apply plugin: 'osgi'
 apply plugin: 'maven'
 apply plugin: 'signing'
-apply plugin: 'release'
+apply plugin: 'pl.allegro.tech.build.axion-release'
 
 repositories {
     mavenCentral()
@@ -53,20 +50,24 @@ signing {
     sign configurations.archives
 }
 
-release {
-    failOnSnapshotDependencies = true
-    // allow modifications due to bug in the release plugin..
-    allowLocalModifications = true
-    releaseDryRun = true
-    scm = 'git'
+scmVersion {
+    tag {
+        prefix = 'ical4j-extensions'
+    }
 }
 
 group = 'org.mnode.ical4j'
-version = release.projectVersion
+version = scmVersion.version
 description = '''
 Support for additional non-standard iCalendar objects
 '''
-ext.isReleaseVersion = !version.endsWith("SNAPSHOT")
+ext {
+    isReleaseVersion = !version.endsWith("SNAPSHOT")
+
+    // sonatype credentials
+    sonatypeUsername = project.hasProperty('sonatypeUsername') ? project.getProperty('sonatypeUsername') : ''
+    sonatypePassword = project.hasProperty('sonatypePassword') ? project.getProperty('sonatypePassword') : ''
+}
 
 uploadArchives {
     repositories {
@@ -111,6 +112,3 @@ uploadArchives {
     }
 }
 
-task wrapper(type: Wrapper) {
-    gradleVersion = '1.11'
-}