Add a changelog entry

Fixes #48
diff --git a/ChangeLog b/ChangeLog
index 873c1c4..2451dfd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-03-28  Jean-Paul Calderone  <exarkun@twistedmatrix.com>
+
+	* OpenSSL/tsafe.py: Replace the use of ``apply`` (which has been
+	  removed in Python 3) with the equivalent syntax.
+
 2014-03-02  Stephen Holsapple  <sholsapp@gmail.com>
 
 	* OpenSSL/crypto.py: Add ``get_extensions`` method to ``X509Req``.