v4.0.0

This version updates nhsuk-frontend to version 8.

What's Changed

For a full list of changes in this release please refer to the migration doc.

• Migrate enzyme to react-testing-library by @JoshuaBates-NHS in #198
• Allow support for module directives in build process by @JoshuaBates-NHS in #199
• Update modified components since NHS UK frontend v5 by @jakeb-nhs in #197
• Add new components since NHS UK frontend v5 by @jakeb-nhs in #202
• Migrate some patterns to components, rework removed components from frontend v8 by @jakeb-nhs in #203
• Improve unit test coverage by @jakeb-nhs in #204

Full Changelog: v3.0.0...v4.0.0