What's Changed

• validate browser configs in #1204
  • ios_chr support stats were removed. The user agent normaliser maps ios_chr to ios_saf.
  • edge support stats above 18 were removed. The user agent normaliser maps Chromium edge to chrome.
  • Added many missing support stats for opera, op_mob, ios_saf and samsung_mob.
  • Resolved a few obvious typo's and bugs in support stats.
  • Added a tool for maintainers to track the state of the browser support stats.
• fix weekly test suite by @romainmenke in https://github.com/Financial-Times/polyfill-library/pull/1200
• fix HTMLElement.prototype.inert by @romainmenke in https://github.com/Financial-Times/polyfill-library/pull/1201
  • This was previously polyfilled as Element.prototype.inert. The old name was kept as an alias.
  • Added missing support stats as browsers have native support now.

Full Changelog: https://github.com/Financial-Times/polyfill-library/compare/v4.1.1...v4.2.0