• Documentation search results are ordered, with visual cues
  indicating what their source is (core, main-distribution, etc.).
  These results are also grouped by language family (Racket, Rhombus,
  etc.). (See https://docs.racket-lang.org/search/index.html?q=second
  .)
• DrRacket offers to restore previously open files when starting,
  which can be made the default.
• In DrRacket, Picts can be saved by right-clicking.
• raco pkg introduces the uninstall command as the opposite of
  install. The remove name for this functionality is retained for
  compatibility. (See
  https://docs.racket-lang.org/pkg/cmdline.html#%28part._raco-pkg-uninstall%29
  .)
• raco pkg improves the handling of --clone and --unclone. (See
  https://docs.racket-lang.org/pkg/cmdline.html#%28part._raco-pkg-update%29
  .)
• iOS is a compilation target, distinct from macOS.
• Racket supports falling back to IPv4 during hostname resolution when
  IPv6 fails.
• Memory allocated using the ffi/unsafe library can be initially
  zeroed, using the 'zeroed-atomic and 'zeroed-atomic-interior
  flags. (See
  https://docs.racket-lang.org/foreign/foreign_pointer-funcs.html#%28idx._%28gentag._11._%28lib._scribblings%2Fforeign%2Fforeign..scrbl%29%29%29
  .)
• Many other bugs are fixed and documentation has been improved!

The following people contributed to this release:

Alec Mills, Alex Knauth, Alexander Shopov, Ashlynn Anderson, Ashton
Wiersdorf, Ben Greenman, Benjamin Yeung, Bob Burger, Bogdan Popa,
Breck Yunits, Carl Gay, Claes Wallin (韋嘉誠), CooperCorad, Crystal
Jacobs, D. Ben Knoble, Dexter Santucci, Eduardo Cavazos, Emil
Szpakowski, evelynmitchell, Greg Hendershott, Gunnar Ahlberg, Gwen
Weinholt, Idiomdrottning, Ikko Eltociear Ashimine, Jacqueline Firth,
Jarhmander, Jay McCarthy, Jens Axel Søgaard, Jimmy McNutt, jinser,
Jinser Kafka, John Clements, lukejianu, Marc Nieper-Wißkirchen,
Matej Fandl, Matthew Flatt, Matthias Felleisen, Michael Ballantyne,
Mike Sperber, olopierpa, Paul Morris, Phil Nguyen, Philip McGrath,
Robby Findler, Ronald Garcia, Ryan Culpepper, Sam Phillips, Sam
Tobin-Hochstadt, Siddhartha Kasivajhula, Sorawee Porncharoenwase,
Stephen De Gabrielle, Syntacticlosure, Taylor Allred, Tomas Fabrizio
Orsi, Wing Hei Chan, and Yafei Yang.