XLSXReader helper for js-xlsx.js.
Taken from https://gist.github.com/psjinx/8002786 and https://gist.github.com/psjinx/8252417 and packaged for convenience.
XLSXReader helper for js-xlsx.js.
Taken from https://gist.github.com/psjinx/8002786 and https://gist.github.com/psjinx/8252417 and packaged for convenience.