What's new in this version:
- Selected files can now be opened in Finder. This can be used to examine files and folders in more detail, and to optionally remove, move or edit files.
- An image of the directory view can now be generated and saved (as a TIFF image).
Code clean up:
- Refactored ItemTreeDrawer into two classes. ItemTreeDrawer now does the basic drawing, and AsynchronousItemTreeDrawer manages drawing in a separate thread.
- The thread used for drawing in the background is now properly terminated and disposed of when it is not needed anymore.