Support for Safari 14 and earlier with 5.0.0

[hexadecy]

With the new version 5.0.0 on Safari 14:

TypeError: Object.hasOwn is not a function. (In 'Object.hasOwn(i,P)', 'Object.hasOwn' is undefined)

https://caniuse.com/?search=Object.hasOwn

Can we add a manual polyfill to this lib like:

if (!Object.hasOwn) {
  Object.hasOwn = function(obj, prop) {
    return Object.prototype.hasOwnProperty.call(obj, prop);
  };
}

Or include the supported browser in the README or changelog.