• upgrade: reject formulae checked in earlier levels (@amyspark)
• Fix Dmg being detected as Tar. (@reitermarkus)
• bash completion example should not call brew if brew doesn't exist (@petdance)
• remove /usr/bin/xattr unsupported -s option in macOS 10.15 (@ytqh)
• Remove uneeded warning when searching for a cask migrated from formula (@BlueGone)
• Docs: Add cask instructions to tap docs (@tomjonandy)
• Show correct message when invalid arguments are passed to brew (@jpninanjohn)
• Expose uses_from_macos list in formula API (@EricFromCanada)
• Fix frozen string bug (@middagj)
• audit: replace depends_on with uses_from_macos (@dawidd6)
• Ruby 2.6 (@Homebrew)
• Revert "Do not run patchelf on portable-ruby [Linux]" (@Homebrew)
• How-to-Create-and-Maintain-a-Tap: note brew tap-new. (@MikeMcQuaid)
• Fix minor typo in How-to-Create-and-Maintain-a-Tap (@XD-DENG)
• subversion_spec: fix svnadmin calls on Linux. (@MikeMcQuaid)
• build: bump mime-types-data from 3.2019.0904 to 3.2019.1009 in /Library/Homebrew (@Homebrew)
• .github/workflows/tests: use homebrew/brew docker image. (@Homebrew)
• Fix diagnostic when only keep_file is in sbin. (@simono)
• Do not run patchelf on portable-ruby [Linux] (@sjackman)
• Cask: refuse to trash root-owned files (@amyspark)
• Fix #system_dir_symlink? not working when target doesn't exist. (@reitermarkus)
• build: bump github-pages from 200 to 201 in /docs (@Homebrew)