TOCParser: refactor signiture of Chapter.new and Paragraph.new
TOCParser: refactor signiture of Chapter.new and Paragraph.new

   Chapter.new(label, id, path, page_metric)
-> Chapter.new(label, chap)

   Paragraph.new(page_metric)
-> Paragraph.new(chap)

krororo/review,orangain/review,takahashim/review,orangain/review,krororo/review,kmuto/review,krororo/review,kmuto/review,takahashim/review,kmuto/review