Update version to 0.6.0.

Alex Tymchenko · Alex Tymchenko · commit 8e174fd992cd · 2016-10-14T20:31:40.000+03:00
diff --git a/build.gradle b/build.gradle
@@ -54,7 +54,7 @@ allprojects {
     apply plugin: 'idea'
 
     group = 'org.spine3'
-    version = '0.6.0-SNAPSHOT'
+    version = '0.6.0'
 }
 
 ext {
