Add link to list of breadcrumbs, usage:

    {% load bubbles_breadcrumbs %}
    {% breadcrumb "Home" "index" %}

    Remember to use it inside {% block %} with {{ block.super }} to get all
    parent breadcrumbs.

    :param label: Breadcrumb link label.
    :param viewname: Name of the view to link this breadcrumb to, or Model
                     instance with implemented get_absolute_url().
    :param args: Any arguments to view function.

def breadcrumb(context, label, viewname, *args, **kwargs):
    """
    Add link to list of breadcrumbs, usage:

    {% load bubbles_breadcrumbs %}
    {% breadcrumb "Home" "index" %}

    Remember to use it inside {% block %} with {{ block.super }} to get all
    parent breadcrumbs.

    :param label: Breadcrumb link label.
    :param viewname: Name of the view to link this breadcrumb to, or Model
                     instance with implemented get_absolute_url().
    :param args: Any arguments to view function.
    """
    append_breadcrumb(context, _(escape(label)), viewname, args, kwargs)
    return ''