Fixed itemprop="author name"

You are right, I tried to oversimplify it. Also, {{ page.date | %Y-%m-%d }} doesn't output what I expected. I think it's fixed now, I tried the code with a couple of validators and everything seems fine.

lib/site_template/_layouts/post.html

@@ -5,7 +5,7 @@ layout: default
 
   <header class="post-header">
     <h1 class="post-title" itemprop="name headline">{{ page.title }}</h1>
-    <p class="post-meta"><time datetime="{{ page.date | %Y-%m-%d }}" itemprop="datePublished">{{ page.date | date: "%b %-d, %Y" }}</time>{% if page.author %} • <span itemprop="author name" itemscope itemtype="http://schema.org/Person">{{ page.author }}</span>{% endif %}{% if page.meta %} • {{ page.meta }}{% endif %}</p>
+    <p class="post-meta"><time datetime="{{ page.date | date_to_xmlschema }}" itemprop="datePublished">{{ page.date | date: "%b %-d, %Y" }}</time>{% if page.author %} • <span itemprop="author" itemscope itemtype="http://schema.org/Person"><span itemprop="name">{{ page.author }}</span></span>{% endif %}{% if page.meta %} • {{ page.meta }}{% endif %}</p>
   </header>
 
   <article class="post-content" itemprop="articleBody">