27 files changed, 179 insertions, 549 deletions

diff --git a/TODO b/TODO
index dad8316..a188804 100644
--- a/TODO
+++ b/TODO
@@ -1,8 +1,7 @@
 This is the todo list for the project.
 
 * Features to add:
-  - Pan the display.
-  - Zoom out.
+  - Preserve the aspect ratio when zooming.
   - Handle multiple selections defined by the user.
     . Save a selection.
     . Load a selection.