Clean up buildscript & add JB annotations as well as a proper build config

build.gradle

@@ -1,9 +1,7 @@
-plugins {
-    id 'java-library'
-}
-
-tasks.withType(JavaCompile) {
-    options.encoding = 'UTF-8'
+buildscript {
+	def config = new Properties()
+	file('build.properties').withInputStream(config.&load)
+	project.ext.config = config
 }
 
 apply plugin: 'java'
@@ -12,24 +10,31 @@ apply plugin: 'maven'
 
 repositories {
     mavenCentral()
+	google()
+
     maven {
         url = "https://maven.speiger.com/repository/main"
     }
 }
 
-archivesBaseName = 'Primitive Collections'
-version = '0.4.0';
-
-sourceCompatibility = targetCompatibility = compileJava.sourceCompatibility = compileJava.targetCompatibility = '1.8'
+archivesBaseName = config.project_name
+version = config.project_version
+group = config.project_group
+sourceCompatibility = config.java_source_version
+targetCompatibility = config.java_target_version
 
 javadoc {
-    options.tags = [ "implSpec", "note" ] 
+    options.tags = [ "implSpec", "note" ]
+	failOnError = false
+	options.memberLevel = JavadocMemberLevel.PUBLIC
+	options.quiet()
 }
 
 eclipse {
 	classpath {
 		downloadJavadoc = true
 		downloadSources = true
+
 		file {
 			whenMerged {
 				//Enforce a custom container and allowing access to the sun.misc package which is nessesary for EnumMaps
@@ -39,6 +44,12 @@ eclipse {
 	}
 }
 
+tasks.withType(JavaCompile) {
+	sourceCompatibility = config.java_source_version
+	targetCompatibility = config.java_target_version
+	options.encoding = 'UTF-8'
+}
+
 compileJava {
     options.compilerArgs << '-XDignore.symbol.file'
     options.fork = true
@@ -54,8 +65,11 @@ configurations {
 }
 
 dependencies {
-	builderCompile 'de.speiger:Simple-Code-Generator:1.0.4'
-	runtimeOnly 'de.speiger:Simple-Code-Generator:1.0.4'
+	implementation group: 'org.jetbrains', name: 'annotations', version: config.annotations_version
+
+	builderCompile group: 'de.speiger', name: 'Simple-Code-Generator', version: config.scg_version
+	runtimeOnly group: 'de.speiger', name: 'Simple-Code-Generator', version: config.scg_version
+
     testImplementation 'junit:junit:4.12'
 }
 
@@ -84,10 +98,6 @@ task srcJar(type: Jar) {
     classifier = 'sources'
 }
 
-javadoc.failOnError = false
-javadoc.options.memberLevel = JavadocMemberLevel.PUBLIC
-javadoc.options.quiet()
-
 artifacts {
     archives javadocJar
     archives srcJar
@@ -107,8 +117,8 @@ uploadArchives {
 		}
 		pom {
 			version = project.version
-			artifactId = project.archivesBaseName.replace(" ", "-")
-			groupId = 'de.speiger'
+			artifactId = config.artifact_id
+			groupId = config.artifact_group
 			project {
 				licenses {
 					license {

build.properties

@@ -0,0 +1,13 @@
+project_name=PrimitiveCollections
+project_id=primitivecollections
+project_group=speiger.src.collections
+project_version=0.4.0
+
+artifact_group=de.speiger
+artifact_id=Primitive-Collections
+
+java_source_version=11
+java_target_version=8
+annotations_version=22.0.0
+
+scg_version=1.0.4