Buffer() is deprecated

[brendanjhoffman]

Making a request shows console error (node:2036) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
Buffer() is being used on shippo\lib\Resource.js:183 - var requestData = new Buffer(JSON.stringify(data || {})); Changing the line to var requestData = Buffer.alloc(JSON.stringify(data || {})); makes the error go away.