Enhance features and documentation

- Updated version to 0.3.743
  - Improved ManagedBrowser configuration with dynamic host/port
  - Implemented fast HTML formatting in web crawler
  - Enhanced markdown generation with a new generator class
  - Improved sanitization and utility functions
  - Added contributor details and pull request acknowledgments
  - Updated documentation for clearer usage scenarios
  - Adjusted tests to reflect class name changes

crawl4ai/async_webcrawler.py

@@ -25,7 +25,8 @@ from .config import (
 from .utils import (
     sanitize_input_encode,
     InvalidCSSSelectorError,
-    format_html
+    format_html,
+    fast_format_html
 )
 from urllib.parse import urlparse
 import random
@@ -534,16 +535,17 @@ class AsyncWebCrawler:
                     "timing": time.perf_counter() - t1
                 }
             )
-        
-
-                
 
         screenshot = None if not screenshot else screenshot
         
+        
+        if kwargs.get("prettiify", False):
+            cleaned_html = fast_format_html(cleaned_html)
+        
         return CrawlResult(
             url=url,
             html=html,
-            cleaned_html=format_html(cleaned_html),
+            cleaned_html=cleaned_html,
             markdown_v2=markdown_v2,
             markdown=markdown,
             fit_markdown=fit_markdown,