diff --git a/expandable-recyclerview/build.gradle b/expandable-recyclerview/build.gradle
index f38bf75..5cb348b 100644
--- a/expandable-recyclerview/build.gradle
+++ b/expandable-recyclerview/build.gradle
@@ -15,7 +15,7 @@ android {
         minSdkVersion 23
         targetSdkVersion 29
         versionCode 1
-        versionName "0.0.1-beta02"
+        versionName "1.0.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         consumerProguardFiles 'consumer-rules.pro'
diff --git a/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/MultilevelRecyclerViewAdapter.kt b/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableRecyclerViewAdapter.kt
similarity index 95%
rename from expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/MultilevelRecyclerViewAdapter.kt
rename to expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableRecyclerViewAdapter.kt
index 0e80119..fd539ba 100644
--- a/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/MultilevelRecyclerViewAdapter.kt
+++ b/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableRecyclerViewAdapter.kt
@@ -3,7 +3,7 @@ package com.github.adriankuta.expandable_recyclerview
 import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
 
-abstract class MultilevelRecyclerViewAdapter<T, VH : RecyclerView.ViewHolder> :
+abstract class ExpandableRecyclerViewAdapter<T, VH : RecyclerView.ViewHolder> :
     RecyclerView.Adapter<VH>() {
 
     private lateinit var treeNodes: ExpandableTreeNode<T>
diff --git a/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNodeExt.kt b/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNodeExt.kt
index ec48d7a..535fc7a 100644
--- a/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNodeExt.kt
+++ b/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNodeExt.kt
@@ -6,7 +6,7 @@ import com.github.adriankuta.datastructure.tree.ChildDeclaration
 @JvmSynthetic
 inline fun <reified T> expandableTree(
     value: T,
-    childDeclaration: ChildDeclaration<T>
+    childDeclaration: ChildDeclaration<T> = {}
 ): ExpandableTreeNode<T> {
     val treeNode = ExpandableTreeNode(value)
     treeNode.childDeclaration()