Merge up to 5.0.2

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  <p>This file documents recent user-visible changes to <a
   href="http://www.greenend.org.uk/rjk/disorder/">DisOrder</a>.</p>
  
 +<p><b>IMPORTANT</b>: you should read <a
 +href="README.upgrades.html">README.upgrades</a> before upgrading.</p>
 +
 +<h2>Changes up to version 5.1</h2>
 +
 +<div class=section>
 +
 +  <h3>Removable Device Support</h3>
 +
 +  <div class=section>
 +
 +    <p>The server will now automatically initiate a rescan when a filesystem is
 +    mounted or unmounted.  (Use the <tt>mount_rescan</tt> option if you want to
 +    suppress this behavior.)</p>
 +
 +    <p>The server takes care not to hold audio files open unnecessarily, so
 +    that devices can be unmounted even if tracks from them are currently being
 +    buffered.</p>
 +
 +  </div>
 +
 +  <h3>General</h3>
 +
 +  <div class=section>
 +
 +    <p>Unicode support has been upgraded to <a
 +    href="http://www.unicode.org/versions/Unicode6.0.0/">Unicode
 +    6.0.0</a>.</p>
 +
 +  </div>
 +
+ <h2>Changes up to version 5.0.2</h2>
+ 
+ <div class=section>
+ 
+ <p>The login form now indicates that a cookie will be set.</p>
+ 
+ </div>
+ 
+ <h2>Changes up to version 5.0.1</h2>
+ 
+ <div class=section>
+ 
+ <h3>Disobedience</h3>
+ 
+ <div class=section>
+ 
+ <p>The sense of the Control &#x2192; Playing menu item was fixed.</p>
+ 
+ </div>
+ 
  </div>
  
  <h2>Changes up to version 5.0</h2>