Allow native access in manifest.mf

Author: bobbylight

README.md

@@ -25,7 +25,7 @@ you would expect:
 ## Building
 
 RText uses [Gradle](https://gradle.org/) to build.  To compile, run
-all unit tests, and create the jar, and run:
+all unit tests, create the jar, and run the app:
 
     ./gradlew build installDist
     java -jar build/install/rtext/RText.jar

build.gradle

@@ -103,6 +103,7 @@ jar {
 			'Implementation-Title': 'org.fife.rtext',
 			'Implementation-Version': version,
 			'Build-Date': Instant.now().toString(),
+			'Enable-Native-Access': 'ALL-UNNAMED', // Needed for flatlaf, see https://github.com/JFormDesigner/FlatLaf/issues/1035
 			'Main-Class': 'org/fife/rtext/Main',
 			'Class-Path': configurations.runtimeClasspath.findAll { !JarPredicates.isPluginJar(it.name) }.collect {
 				def name = it.name