* find_comments implementation and AugeasCommentNode creation
* Use dummy value for ancestor
* Add NotImplementedError when calling find_comments with exact parameter
* Remove parameter 'exact' from find_comments interface
* Fix comment
* DualParserNode, DualCommentNode and DualDirectiveNode implementations
* Add DualBlockNode
* Address review comments
* Address review comments
* Call the right assertion after name change
* Simplify isPass
* Add explanation to _create_matching_list pydoc
* Break when match was found