title: FatFree sql based sessions
body: <p>In my <code>beforeroute()</code> I have </p>
  
  <pre><code>new \DB\SQL\Session ($this-&gt;db) ;
  $this-&gt;f3-&gt;set('SESSION.userid', 123);
  </code></pre>
  
  <p>However afterwards I don't see any record inserted into my sessions table.</p>
  
  <p>Other than that, I had to manually create sessions table, as F3 wasn't able to, although sqlite.db file was writable by server group. </p>
  
  <p>What could be wrong? </p>