9.0.0

Added

• API hook for afterPrune (#677)
• Package manager-agnostic pruning support (set packageManager to false) (#690)
• linux platform, arm64 arch builds (Electron 1.8.0 and above) (#711)

Changed

• Promise support for packager - function returns a Promise instead of the return value of the
  callback (#658)
• win32metadata.CompanyName defaults to author name from nearest package.json (#667)
• win32metadata.FileDescription defaults to productName or name from
  nearest package.json (#667)
• win32metadata.OriginalFilename defaults to renamed .exe (#667)
• win32metadata.ProductName defaults to productName or name from nearest package.json (#667)
• win32metadata.InternalName defaults to productName or name from
  nearest package.json (#667)
• Warn when downloading from the official Electron releases and the arch/platform combination
  specified is invalid (#562)
• Do not error out immediately if a download.mirror is specified and an unofficial arch/platform
  is specified (#670)
• Allow spaces when specifying archs/platforms as a string, rather than an array (#487)
• The extraResource option works on all target platforms (#637)
• all or platform=linux, arch=all now include arch=arm64 if the Electron version specified is
  1.8.0 or above (#711)

Fixed

• common.warning for codesigning (#694)

Removed

• version is removed in favor of electronVersion (CLI: --electron-version) (#665)
• version-string is removed in favor of win32metadata (#668)
• Options set via the JavaScript API formatted in kebab-case (i.e., with hyphens) are removed in
  favor of their camelCase variants, per JavaScript naming standards (#669)