build: should now also build sources and javadocs jar

build.gradle

@@ -6,7 +6,12 @@ plugins {
 archivesBaseName = 'lll'
 version = gitVersion()
 
-java.toolchain.languageVersion = JavaLanguageVersion.of(8)
+java {
+	sourceCompatibility = JavaVersion.VERSION_1_8
+	targetCompatibility = JavaVersion.VERSION_1_8
+	withSourcesJar()
+	withJavadocJar()
+}
 
 repositories {
     mavenCentral()
@@ -20,4 +25,4 @@ dependencies {
 
 jar {
     archiveFileName = "${jar.archiveBaseName.get()}-${project.version.split('-')[0]}.${jar.archiveExtension.get()}"
-}
+}