add processing4-javafx submodule

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "processing4"]
 	path = processing4
 	url = https://github.com/processing/processing4.git
+[submodule "processing4-javafx"]
+	path = processing4-javafx
+	url = https://github.com/processing/processing4-javafx.git

README.md

@@ -6,7 +6,7 @@ This is a mirror of the *core* library from [Processing 4](https://github.com/pr
 
 It is hosted as a *Maven* dependency via [JitPack](https://jitpack.io/#micycle1/processing-core-4) (from this Github repository) so it can be referenced in your own *Maven* project (for when you want to use the Processing library outside of the Processing IDE).
 
-This mirror is not necessarily up to date with the latest Processing 4 release; it is currently based on Processing [**4.0 beta 4**](https://github.com/processing/processing4/releases/tag/processing-1279-4.0b4).
+This mirror is not necessarily up to date with the latest Processing 4 release; it is currently based on Processing [**4.0 beta 6**](https://github.com/processing/processing4/releases/tag/processing-1281-4.0b6).
 
 ---
 
@@ -28,7 +28,7 @@ This mirror is not necessarily up to date with the latest Processing 4 release;
   <dependency>
 	  <groupId>com.github.micycle1</groupId>
 	  <artifactId>processing-core-4</artifactId>
-	  <version>4.0b4</version>
+	  <version>4.0b6b</version>
 </dependency>
   ```
 

pom.xml

@@ -14,17 +14,16 @@
 	</properties>
 
 	<build>
-		<sourceDirectory>processing4\core\src</sourceDirectory>
 		<resources>
 			<resource>
 				<directory>processing4\core\src</directory>
-				<excludes>
-					<exclude>**/*.java</exclude>
-				</excludes>
+			</resource>
+			<resource>
+				<directory>processing4-javafx\src</directory>
 			</resource>
 		</resources>
+
 		<plugins>
-
 			<plugin>
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.9.0</version>
@@ -33,7 +32,6 @@
 					<encoding>UTF-8</encoding>
 				</configuration>
 			</plugin>
-
 			<plugin>  <!-- Create sources.jar -->
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
@@ -64,7 +62,6 @@
 					</execution>
 				</executions>
 			</plugin>
-
 		</plugins>
 	</build>