include author name (and link) in postmeta

_includes/postmeta.html

@@ -18,5 +18,6 @@
 	{% endif %}
 {% else %}
 	{{ include.post.date | date: "%d.%m.%Y" }}
+	{% if include.post.author %}– {% if include.post.author_url %}<a target="_blank" href="{{ include.post.author_url }}">{{ include.post.author }}</a>{% else %}{{ include.post.author }}{% endif %}{% endif %}
 {% endif %}