Commit Message:

Enhance Async Crawler with storage state handling
  - Updated Async Crawler to support storage state management.
  - Added error handling for URL validation in Async Web Crawler.
  - Modified README logo and improved .gitignore entries.
  - Fixed issues in multiple files for better code robustness.

crawl4ai/extraction_strategy.py

@@ -632,7 +632,7 @@ class ContentSummarizationStrategy(ExtractionStrategy):
         # Sort summaries by the original section index to maintain order
         summaries.sort(key=lambda x: x[0])
         return [summary for _, summary in summaries]
-  
+ 
 class JsonCssExtractionStrategy(ExtractionStrategy):
     def __init__(self, schema: Dict[str, Any], **kwargs):
         super().__init__(**kwargs)