Fix: RecentProjectData deserialization

src/main/java/drawingbot/files/RecentProjectData.java

@@ -0,0 +1,20 @@
+package drawingbot.files;
+
+import drawingbot.files.json.JsonData;
+
+import java.io.File;
+import java.util.ArrayList;
+
+@JsonData
+public class RecentProjectData {
+
+    public ArrayList<File> recentFiles;
+
+    public RecentProjectData() {
+        //for GSON
+    }
+
+    public RecentProjectData(ArrayList<File> recentFiles) {
+        this.recentFiles = recentFiles;
+    }
+}

src/main/java/drawingbot/files/RecentProjectHandler.java

@@ -1,7 +1,6 @@
 package drawingbot.files;
 
 import drawingbot.DrawingBotV3;
-import drawingbot.files.json.JsonData;
 import drawingbot.files.json.JsonLoaderManager;
 import drawingbot.files.json.projects.ObservableProject;
 import javafx.collections.FXCollections;
@@ -62,18 +61,4 @@ public static void addRecentProject(ObservableProject project){
         recentProjectsChanged = true;
     }
 
-    @JsonData
-    private static class RecentProjectData{
-
-        public ArrayList<File> recentFiles;
-
-        public RecentProjectData() {
-            //for GSON
-        }
-
-        public RecentProjectData(ArrayList<File> recentFiles) {
-            this.recentFiles = recentFiles;
-        }
-    }
-
 }