Can't get ean128 option from attribute

[jonbrock]

<svg jsbarcode-format="code128c" jsbarcode-value="42012345" jsbarcode-ean128="true"></svg> isn't working properly when using JsBarcode.init(). The reason is that the jsbarcode-ean128 option is not being read because ean128 is missing from src/options/defaults.js.

This can be fixed by adding ean128: false to the defaults variable.