+5.39 * New hacks, 'razzledazzle', 'peepers', 'crumbler' and `maze3d'.
+ * More heuristics for using RSS feeds as image sources.
+ * Android: Image loading works.
+ * Built-in image assets are now PNG instead of XPM or XBM.
+ * X11: Better font-loading fallback heuristics on systems with a
+ terrible selection of installed fonts.
+ * macOS: Retina display-related bug fixes.
+