- sector checked before reading (h/t @e12009) See https://github.com/SheetJS/js-xlsx/issues/569 - flow type checking
- no pollution of the Array prototype - alignment with js-xls CFB code - removed main code in CFB (use cfb bin instead) - more tests - added dist - correect for incorrect tree level pointers
Instead of a fixed check, assume that the references are relative if they are not absolute