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.
5.38 * New hack, 'esper'.
* macOS: Support for Retina displays.
* X11: `webcollage' now works with ImageMagick instead of with
pbmtools if `webcollage-helper' is not installed.
* 'bsod' now accepts Dunning-Krugerrands.
* Android: These hacks work now: 'anemone', 'anemotaxis', 'atlantis',
'bouboule', 'celtic', 'compass', 'crackberg', 'epicycle',
'fuzzyflakes', 'goop', 'kumppa' 'munch', 'pacman', 'polyominoes',
'slip'.
* Android: Thick lines work better for: 'anemone', 'anemotaxis',
'celtic', 'compass', 'deluxe', 'epicycle', 'fuzzyflakes', 'pacman'
* Android: Assorted performance improvements, especially for 'kumppa'
and 'slip'.
* Android TV: Daydreams work.
* iOS: Tweaks for iPhone X.
* Lots of xlockmore-derived hacks now have animated erase routines.
* 'crystal' works properly on non-X11 systems.
* 'm6502' now includes 'texture.asm'.
* X11: Try harder to find sensible fonts for the password dialog.
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