Updates for Minecraft 1.17

Still needs a bit of tweaking

build.gradle

@@ -1,10 +1,10 @@
 plugins {
-	id 'fabric-loom' version '0.5-SNAPSHOT'
+	id 'fabric-loom' version '0.8-SNAPSHOT'
 	id 'maven-publish'
 }
 
-sourceCompatibility = JavaVersion.VERSION_1_8
-targetCompatibility = JavaVersion.VERSION_1_8
+sourceCompatibility = JavaVersion.VERSION_16
+targetCompatibility = JavaVersion.VERSION_16
 
 archivesBaseName = project.archives_base_name
 version = project.mod_version + "-" + project.minecraft_version + "-fabric"
@@ -43,13 +43,8 @@ tasks.withType(JavaCompile).configureEach {
 	// If Javadoc is generated, this must be specified in that task too.
 	it.options.encoding = "UTF-8"
 
-	// The Minecraft launcher currently installs Java 8 for users, so your mod probably wants to target Java 8 too
-	// JDK 9 introduced a new way of specifying this that will make sure no newer classes or methods are used.
-	// We'll use that if it's available, but otherwise we'll use the older option.
-	def targetVersion = 8
-	if (JavaVersion.current().isJava9Compatible()) {
-		 it.options.release = targetVersion
-	}
+	// Minecraft 1.17 (21w19a) upwards uses Java 16.
+	it.options.release = 16
 }
 
 java {