fixed slow scrolling; updated ver for prev. commit

Author: EatSleepProgramRepeat

src/main/java/com/CDPrintable/ProgramWindow.java

@@ -99,6 +99,8 @@ private JPanel previewPanel() {
 
         // Make a JScrollPane for the image panel
         JScrollPane imageScrollPane = new JScrollPane(imagePanel);
+        imageScrollPane.getVerticalScrollBar().setUnitIncrement(20);
+        imageScrollPane.getHorizontalScrollBar().setUnitIncrement(20);
 
         // Add buttons to the button panel
         buttonPanel.add(refreshButton);

src/main/resources/version.properties

@@ -1,4 +1,4 @@
 # Application version.
 
 # MAJOR MINOR PATCH
-version=2.1.1
+version=2.2.1