Features

• Add a new --reference <cmd> option to specify a reference command for the relative speed comparison, see #579, #577 and #744 (@JanEricNitschke)
• Add --conclude argument (analog to --prepare), see #565 and #719 as well as the docs here (@jackoconnordev)
• Allow --output=… to appear once for each command, enabling use cases like hyperfine --output=null my-cmd --output=./file.log my-cmd, see #529 and #775 (@sharkdp)
• The environment variable $HYPERFINE_ITERATION will now contain the current iteration number for each benchmarked command, see #775 (@sharkdp)
• Add iteration information to failure error message, see #771 and #772 (@sharkdp)
• Python scripts:
  • legend modification parameters and output DPI, see #758 (@Spreadcat)
  • Nicer whiskers plot, see #727 (@serpent7776)

Bugfixes

• ETA not clearly visible on terminals with a block cursor, see #698 and #699 (@overclockworked64)
• Fix zsh completions, see #717 (@xzfc)

Other

• Build binaries for aarch64-apple-darwin, see #728 (@Phault)
• Various cleanups (@hamirmahal, @one230six)