Update date to July 4

Author: jaredhoberock

front_matter.html

@@ -1,6 +1,6 @@
 <cxx-titlepage stage="draft">
 <cxx-docnum>N4104</cxx-docnum>
-  <time pubdate="">2014-06-19</time>
+  <time pubdate="">2014-07-04</time>
   <cxx-revises><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3960.pdf">N3960</a></cxx-revises>
   <cxx-editor>
     Jared Hoberock<br/>

parallelism-ts.html

@@ -570,7 +570,7 @@
         <tbody><tr><th>Document Number:</th><td><cxx-docnum>N4104</cxx-docnum></td></tr>
 
 
-        <tr><th>Date:</th><td><time pubdate="">2014-06-19</time></td></tr>
+        <tr><th>Date:</th><td><time pubdate="">2014-07-04</time></td></tr>
 
 
         <tr><th>Revises:</th><td><cxx-revises><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3960.pdf">N3960</a></cxx-revises></td></tr>