Replaced compile by api and implementation declarations. Moved to jav…

…a-library plugin. https://docs.gradle.org/current/userguide/java_library_plugin.html. Known issue: The IvyArtifactRepository.layout(String, Closure) method has been deprecated. This warning indicates that gradle_node_plugin won't on gradle 6. node-gradle/gradle-node-plugin#2

build.gradle

@@ -6,47 +6,44 @@
 */
 
 plugins {
+  id "java-library"
+  id "eclipse"
+  id "maven-publish"
   id "com.moowork.node" version "1.3.1"
 }
 
 defaultTasks 'run'
 
-apply plugin: 'java'
-apply plugin: 'eclipse'
-apply plugin: 'maven-publish'
-
-
-apply plugin: 'base' /*used by moowork node plugin*/
-
 group   'org.jacamo'
 version '0.4-SNAPSHOT'
-sourceCompatibility = 1.8
-targetCompatibility = 1.8
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
 
 repositories {
 	mavenCentral()
 	maven { url "http://jacamo.sourceforge.net/maven2" }
 	maven { url "https://raw.github.com/jacamo-lang/mvn-repo/master" }
 	maven { url "https://jade.tilab.com/maven/" }
-	flatDir {
-		dirs 'lib'
-	}
+
 }
 
 dependencies {
-	compile group: 'org.jacamo' , name: 'jacamo'   , version: '0.9-SNAPSHOT'  , changing: true , transitive: true
-	compile 'org.jacamo:jacamo-rest:0.3-SNAPSHOT'
+	api group: 'org.jacamo' , name: 'jacamo'   , version: '0.9-SNAPSHOT'  , changing: true , transitive: true
+	api 'org.jacamo:jacamo-rest:0.3-SNAPSHOT'
 
 	//websockets for simulations
-	compile 'javax.websocket:javax.websocket-api:1.1'
-	compile 'org.glassfish.tyrus:tyrus-server:1.1'
-	compile 'org.glassfish.tyrus:tyrus-container-grizzly:1.1'
+	implementation 'javax.websocket:javax.websocket-api:1.1'
+	implementation 'org.glassfish.tyrus:tyrus-server:1.1'
+	implementation 'org.glassfish.tyrus:tyrus-container-grizzly:1.1'
 
 	// https://mvnrepository.com/artifact/org.eclipse.jgit/org.eclipse.jgit
-	compile group: 'org.eclipse.jgit', name: 'org.eclipse.jgit', version: '5.6.0.201912101111-r'
+	implementation 'org.eclipse.jgit:org.eclipse.jgit:5.6.0.201912101111-r'
 
 	// https://mvnrepository.com/artifact/net.openhft/compiler
-	compile group: 'net.openhft', name: 'compiler', version: '2.3.1'
+	implementation 'net.openhft:compiler:2.3.1'
 }
 
 sourceSets {