Creating a fat jar for release

build.gradle

@@ -0,0 +1,54 @@
+plugins {
+    id "org.jetbrains.kotlin.jvm" version "1.5.30"
+}
+
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
+sourceSets {
+    main.kotlin.srcDirs += 'src/main/kotlin'
+    main.java.srcDirs += 'src/main/java'
+}
+
+// region dependencies
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'junit:junit:4.12'
+}
+
+// endregion
+
+tasks.test {
+    useJUnit()
+}
+
+tasks.test {
+    useJUnit()
+}
+
+tasks.withType(Jar) {
+    duplicatesStrategy = DuplicatesStrategy.INHERIT
+}
+
+// region fatjar
+
+group = "me.pbeagan"
+version = "1.0-SNAPSHOT"
+
+task buildMainJar(type: Jar) {
+    archiveBaseName.set("FamilyTreeGenerator")
+    exclude("META-INF/versions/9/module-info.class")
+    manifest {
+        attributes "Main-Class": "com.pbeagan.MainKt"
+    }
+
+    from { configurations.compileClasspath.collect { it.isDirectory() ? it : zipTree(it) } }
+    with jar
+}
+
+// endregion
+

settings.gradle.kts

@@ -1,3 +1,3 @@
 
-rootProject.name = "untitled"
+rootProject.name = "familyTreeGenerator"
 

src/main/kotlin/com/pbeagan/io/Printer.kt

@@ -9,10 +9,9 @@ interface IPrinter {
 }
 
 class Printer : IPrinter {
-
     override fun printProcessError(process: Process): Process {
         process.errorStream.reader(Charsets.UTF_8).use { reader ->
-            println(reader.readText())
+            print(reader.readText())
         }
         return process
     }

src/test/kotlin/MainKtTest.kt

@@ -1,16 +1,14 @@
-import com.pbeagan.ExternalProcessManager
 import com.pbeagan.IExternalProcessManager
 import com.pbeagan.Runtime
 import com.pbeagan.entities.IPerson
 import com.pbeagan.entities.Person
-import com.pbeagan.io.FileManager
 import com.pbeagan.io.IFileManager
 import com.pbeagan.io.Printer
 import com.pbeagan.providers.PersonProvider
+import org.junit.Assert.assertEquals
 import org.junit.Test
 import java.io.File
 import kotlin.random.Random
-import kotlin.test.assertEquals
 
 internal class MainKtTest {
     @Test