Extra Upstream:Java16 update Slimefun-Addon-Community#245

pom.xml

@@ -8,9 +8,15 @@
     <version>UNOFFICIAL</version>
 
     <properties>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
+        <!-- UTF-8 is our standard encoding for source files -->
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <!-- Target Java 16 -->
+        <maven.compiler.source>16</maven.compiler.source>
+        <maven.compiler.target>16</maven.compiler.target>
+
+        <!-- Spigot properties -->
+        <spigot.version>1.19</spigot.version>
+        <spigot.javadocs>https://hub.spigotmc.org/javadocs/spigot/</spigot.javadocs>
     </properties>
 
     <repositories>
@@ -105,14 +111,14 @@
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot-api</artifactId>
-            <version>1.16.5-R0.1-SNAPSHOT</version>
+            <version>1.19-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>com.github.slimefun</groupId>
             <artifactId>Slimefun4</artifactId>
-            <version>RC-31</version>
+            <version>RC-32</version>
             <scope>provided</scope>
             <exclusions>
                 <exclusion>