Added option to include the 'data' property of the state into the breadcrumb

[nielsboogaard]

Sometimes I needed the possibility to show or hide a certain breadcrumb based on information given in the data property of the state. This PR adds a flag to allow including the state data in the breadcrumb, to enable additional checks in custom templates.

[michaelbromley]

Hi,

Sorry this took a while to get back to you on. First of all, thanks for the PR. I was wondering if you could give me some example use-cases where you needed this? Just so I can get a sense of what problem it is solving.

Thanks.