IFC clash detection library to handle intersections, collisions, and clearance checks between building elements in IFC models.

• Multiple detection modes: intersection, collision, and clearance checking
• Flexible clash sets: Compare elements within a single model or between multiple IFC files
• Smart grouping: Automatically group related clashes
• Export options: Export clash results to BCF-XML or JSON formats
• Element filtering: Use selectors to specify which elements to check for clashes