v0.1.73 - Update Platform API contract (#91)

🌟 Summary

v0.1.73 updates the Ultralytics Platform API and Python SDK with dataset-version comparison and more flexible exports, plus clearer CLI connection and authentication errors.

📊 Key Changes

• 🔍 Compare dataset versions: Added a dataset comparison endpoint and typed synchronous and asynchronous datasets.compare() methods. Responses can summarize added, removed, modified, or moved images, show label and dataset-header changes, and provide paginated results. A specific image can also be inspected across versions.
• 📦 Choose whether to prepare an export download: Dataset export creation now accepts an optional download setting. When downloads aren’t requested, the response may omit downloadUrl.
• 🔄 Expose restore progress context: Dataset response types now include restoreVersion, identifying the version an in-progress or interrupted restore applies.
• 🧭 Make CLI errors more actionable: A 401 response now includes guidance for creating and configuring an API key. Connection failures show the Platform URL and underlying error reason.
• ⚙️ Keep the SDK aligned with the API: The OpenAPI contract and regenerated Python SDK are versioned at 0.1.73, with CI validating the generated package.

🎯 Purpose & Impact

• Dataset comparisons make it easier to review what changed between saved versions and inspect how an individual image or its labels differ.
• Optional export downloads let users save a dataset version without also preparing a download, while keeping existing download behavior available by default.
• Clearer CLI messages help users diagnose invalid credentials and network or configuration problems more quickly.
• These are Platform API, SDK, and CLI improvements; the release does not introduce a model change.

What's Changed

• Add actionable 401 and connection error hints to the ul CLI by @JaviChulvi in #89
• Update Platform API contract by @UltralyticsAssistant in #91

Full Changelog: v0.1.72...v0.1.73