Implement the checking of the Release parameter!

layouts/_default/list.html

@@ -23,6 +23,10 @@
                             {{ continue }}
                         {{ end }}
 
+                        {{ if and (.Params.release) (ge (time.AsTime .Params.release) (time now)) }}
+                            {{ continue }}
+                        {{ end }}
+
                         <li class="post-item">
                             <a href="{{.Permalink}}" class="post-item-inner">
                                 <span class="post-title">