JavaFX reflective access + Javadoc + @delvh

* Allow reflective access to the JavaFX module for javafx.base
* Add space to the unit test orders
* Improve Javadoc
* Add @delvh as developer

core/src/main/java/dev/kske/undoredo/core/ChangeManager.java

@@ -6,6 +6,10 @@ import java.util.*;
  * A change manager keeps track of subsequent changes and allows un- and redoing them. A specific
  * change can be marked using {@link #mark()} to keep track of a saved state in the application that
  * uses the manager.
+ * <p>
+ * If you intend to listen to the state of a change manager, consider writing a wrapper
+ * implementation for an existing change manager that adds the necessary hooks. If you use JavaFX,
+ * take a look at the {@code dev.kske.undoredo.javafx} module.
  *
  * @param <C> the change type to store in this change manager
  * @author Maximilian K&auml;fer

core/src/main/java/dev/kske/undoredo/core/UnlimitedChangeManager.java

@@ -24,7 +24,7 @@ public final class UnlimitedChangeManager<C extends Change> implements ChangeMan
 
 	@Override
 	public Optional<C> getLastChange() {
-		return index == -1 ? Optional.empty() : Optional.of(changes.get(index));
+		return index < 0 ? Optional.empty() : Optional.of(changes.get(index));
 	}
 
 	@Override

core/src/test/java/dev/kske/undoredo/core/ChangeManagerTest.java

@@ -27,7 +27,7 @@ class ChangeManagerTest {
 	 * @since 0.0.1
 	 */
 	@Test
-	@Order(1)
+	@Order(10)
 	void testAddChange() {
 		assertSame(0, wrapper.value);
 		manager.addChange(change);
@@ -40,7 +40,7 @@ class ChangeManagerTest {
 	 * @since 0.0.1
 	 */
 	@Test
-	@Order(2)
+	@Order(20)
 	void testLastChange() {
 		assertTrue(manager.getLastChange().isEmpty());
 		manager.addChange(change);
@@ -53,7 +53,7 @@ class ChangeManagerTest {
 	 * @since 0.0.1
 	 */
 	@Test
-	@Order(3)
+	@Order(30)
 	void testGetChanges() {
 		assertTrue(manager.getChanges().isEmpty());
 		manager.addChange(change);
@@ -67,7 +67,7 @@ class ChangeManagerTest {
 	 * @since 0.0.1
 	 */
 	@Test
-	@Order(4)
+	@Order(40)
 	void testUndo() {
 		assertFalse(manager.isUndoAvailable());
 		assertFalse(manager.undo());
@@ -85,7 +85,7 @@ class ChangeManagerTest {
 	 * @since 0.0.1
 	 */
 	@Test
-	@Order(5)
+	@Order(50)
 	void testRedo() {
 		assertFalse(manager.isRedoAvailable());
 		assertFalse(manager.redo());
@@ -106,7 +106,7 @@ class ChangeManagerTest {
 	 * @since 0.0.1
 	 */
 	@Test
-	@Order(6)
+	@Order(60)
 	void testMark() {
 		assertTrue(manager.isAtMarkedIndex());
 		manager.addChange(change);