Statistics doesn't work in index.html

[athoune]

Trouble

In article-info.html I have to test if stats is available :

{% if article.stats %}
<p title="~{{ article.stats['wc'] }} mots">~{{ article.stats['read_mins'] }} minutes de lecture</p>
{% endif %}

Stats are shown in articles page.
Without testing stats availability, pelican raise an exception.

Fix

The fix is easy, the generators_finalized signal must be used, too.

def register():
    """Register the Statistics plugin."""
    try:
        signals.all_generators_finalized.connect(run_plugin)
        signals.generators_finalized.connect(run_plugin)
    except AttributeError:
        # NOTE: This results in #314 so shouldn't really be relied on
        # https://github.com/getpelican/pelican-plugins/issues/314
        signals.content_object_init.connect(calculate_stats)

Do you want a pull-request (for a one line fix) ?