v1.8.0

What's Changed

• Add grok-imagine-image-pro to ImageGenerationModel by @shawnthapa in https://github.com/xai-org/xai-sdk-python/pull/103
• Add agent_count parameter to chat API for multi-agent models by @shawnthapa in https://github.com/xai-org/xai-sdk-python/pull/104
• Add grok-4.20 experimental beta and multi-agent model variants to ChatModel by @shawnthapa in https://github.com/xai-org/xai-sdk-python/pull/105
• Bump version from 1.7.0 to 1.8.0 by @shawnthapa in https://github.com/xai-org/xai-sdk-python/pull/106

Full Changelog: https://github.com/xai-org/xai-sdk-python/compare/v1.7.0...v1.8.0