v2.0.0

• Add support for Inertia.js v2.0.0
• Add Inertia::defer() to support deferred props
• Add Inertia::merge() to support merging props on client
• Add Inertia::always() for props that should always be included (#627)
• Add Inertia::clearHistory() and Inertia::encryptHistory() methods, encryption config, and encryption middleware
• Deprecated Inertia::lazy() in favor of Inertia::optional()
• Drop support for Laravel 8 and 9 (#629)