4.0.0

Change

• 3faad68 Change to require Node.js 16
  migrate: update Node
• f8ab16b Change to use export map
  migrate: don’t use private APIs
• 357e056 Remove position field, add support for options
  by @wooorm in #19
  migrate: if you used .position, switch that to .place
  optionally use the nicer options parameter to pass your things
• 3d06489 Replace use of null with undefined
  by @wooorm in #18

Misc

• 7074462 Refactor docs
• 2e55ec3 Refactor code-style
• e9fb31d Refactor package.json

Full Changelog: 3.1.4...4.0.0