Version 8.0.0

Major

• Updated supported Node.js versions to ^10.17.0 || ^12.0.0 || >= 13.7.0.
• Added integration tests. These use modern Node.js APIs, increasing the minimum supported Node.js version.

Patch

• Updated dependencies.
• Stop testing with Node.js v13.
• Added missing file extensions to dynamic imports from Next.js.
• Removed documentation relating to polyfilling Promise and fetch, as they are automatically polyfilled by recent versions of Next.js.
• Updated the .editorconfig file.