• Made the token insertion methods static in Parser so that ActiveFormattingElementsList::reconstruct can insert methods without having to access the Parser instance itself. Might do it differently later, but this works for now.
• Since the fragment context that is passed to Stack can be null it is necessary to check whether the argument is valid before continuing.
• Parser::instance is now protected as all classes are now decoupled.
• Changed the name of the parser instance variable from Parser::$self to Parser::$instance
• Added parse errors for entities into ParseError.
• Moved Parser::fixDOM to DOM::fixIdAttributes.
• Added an exception for when the tokenizer enters an invalid state (infinite looping).
• Made ParseError use Parser::$instance->data instead of a passed around DataStream object.
• Made names of storage property in Stack and ActiveFormattingElementsList consistent to elsewhere
• Parser has its own public static variable that is an intance of itself, so ActiveFormattingElementsList can use that instead of passing an instance around.
• Added separate exception for ActiveFormattingElementsList