• Many parts of PPI are VASTLY changed in this revision
  
• Breaks API compatibility heavily
  
• Adds dependency on List::MoreUtils
  
• Added PPI::Lexer support for CHECK blocks
  
• Added PPI::Document::load method
  
• Added PPI::Document::save method
  
• Added PPI::Document::index_locations method
  
• Added PPI::Document::flush_locations method
  
• Added PPI::Element::top method
  
• Added PPI::Element::document method
  
• Renamed PPI::Element::extract -> PPI::Element::remove
  
• Added test script for element-y stuff
  
• Optimisation across the board using List::Any
  
• Added PPI::Node::first_child method
  
• Added PPI::Node::last_child method
  
• Added PPI::Element::clone method
  
• Removed Filehandle support from PPI::Tokenizer, to allow the
  ability to rollback source lines into the buffer if needed.
  
• Added POD documentation for PPI::Element
  
• Added POD documentation for PPI::Node
  
• Added POD documentation for PPI::Document