4.41.0: Build custom bundles with `npx exifreader build`

Added

• npx exifreader build command to (re)build a custom bundle from the
  exifreader configuration in your package.json. This is the supported
  replacement for the automatic postinstall rebuild and works the same way
  with npm, yarn, and pnpm.

Changed

• Custom builds that exclude image formats or metadata groups are now smaller.
  The metadata merge pipeline no longer carries the merge handlers for excluded
  PNG, JPEG XL, ICC, and XMP data, so for example a JPEG plus Exif build drops
  by around 0.8 KiB gzipped.

Deprecated

• The automatic custom build via the npm postinstall script is deprecated and
  will be removed in v5. Use npx exifreader build instead.

Fixed

• Custom builds now transpile to ES5 even when run with NODE_ENV=production.
  @babel/preset-env is applied unconditionally in babel.config.json instead
  of only under Babel's default env.
• Custom builds now install their build toolchain in a unique OS temporary
  directory instead of temporarily moving exifreader's own node_modules
  aside, so an interrupted or concurrent build can no longer strand or corrupt
  the install.

Full Changelog: v4.40.5...v4.41.0