4.0.0

• Add support for MSW
• Add support for string identifiers
• Add support for custom id generation
• Refactor interceptors as middlewares
• Add ability to delay the response
• Add ability to simulate server-side validation
• Add ability to simulate authentication checks
• Add TypeScript types
• Modernize development tools
• Rewrite Readme

This major version includes some breaking changes. Check the Upgrade.md file for upgrade instructions.