Including source in build artifact to ease debugging.
diff --git a/build.gradle b/build.gradle
index b751607..c9fce77 100644
--- a/build.gradle
+++ b/build.gradle
@@ -56,6 +56,10 @@
     )
 }
 
+jar {
+    from sourceSets.main.allSource
+}
+
 publishing {
     publications {
         langPublication(MavenPublication) {