TreeNode is now not final.

.circleci/config.yml

@@ -72,7 +72,7 @@ workflows:
   version: 2.1
   build-and-deploy:
     jobs:
-      - build
+      - build:
           filters:  # required since `deploy` has tag filters AND requires `build`
             tags:
               only: /.*/

app/build.gradle

@@ -25,11 +25,11 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.0.2'
+    implementation 'androidx.appcompat:appcompat:1.1.0'
-    implementation 'androidx.core:core-ktx:1.0.2'
+    implementation 'androidx.core:core-ktx:1.1.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
 }

treedatastructure/build.gradle

@@ -15,7 +15,7 @@ android {
         minSdkVersion 15
         targetSdkVersion 29
         versionCode 1
-        versionName "1.0.4"
+        versionName "1.0.6"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         consumerProguardFiles 'consumer-rules.pro'
@@ -31,7 +31,6 @@ android {
 }
 
 dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.core:core-ktx:1.1.0'

treedatastructure/src/main/java/com/github/adriankuta/datastructure/tree/TreeNode.kt

@@ -1,6 +1,6 @@
 package com.github.adriankuta.datastructure.tree
 
-class TreeNode<T>(val value: T) {
+open class TreeNode<T>(val value: T) {
 
     private var parent: TreeNode<T>? = null
     private val children = mutableListOf<TreeNode<T>>()