Updated release plan.

misc/plan.html

@@ -14,7 +14,7 @@
   <h1> Nettle release plans </h1>
   <p> This is an attempt at defining a development target for
     Nettle-3.1, inspired by similar pages for recent GMP releases.
-    [Last updated 2015-01-19]</p>
+    [Last updated 2015-01-26]</p>
   <p class='should'>
     This really ought to be done before release
   </p>
@@ -90,7 +90,7 @@
   </p>
   
   <h2> Build system </h2>
-  <p class='should'>
+  <p class='done'>
     Support for fat binaries on ARM and x86_64, selecting code at
     runtime depending on cpu capabilities.
   </p>