Parent key giving problems with circular references

[agyemanjp]

Please add an option to exclude the parent key from the AST. As it is now, the AST cannot be stringified because it will introduce infinite recursion.

Try this example code:

const xmlReader = require('xml-reader');
const markup = `<StackPanelVertical><Banner title="title" logo="logo.jpg"/><Footer/></StackPanelVertical>`;
const result = xmlReader.parseSync(markup);
console.log(JSON.stringify(result));

This will give an error. In most cases, there is no need for the parent key