bip47: Move Changelog to bottom

bip-0047.mediawiki

@@ -1,8 +1,3 @@
-RECENT CHANGES:
-* (15 Feb 2021) Finalize specification
-* (28 Sep 2017) Adjust text to match test vectors
-* (19 Apr 2016) Define version 2 payment codes
-
 <pre>
   BIP: 47
   Layer: Applications
@@ -385,3 +380,12 @@ Alice's wallet should spend the notification change output at the next appropria
 * [[https://en.bitcoin.it/wiki/Base58Check_encoding|Base58Check encoding]]
 * [[https://bitmessage.org/bitmessage.pdf|Bitmessage]]
 * [[https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2015-April/007812.html|Mailing list discussion]]
+
+==Changelog==
+
+* 2021-02-15:
+** Finalize specification
+* 2017-09-28:
+** Adjust text to match test vectors
+* 2016-04-19:
+** Define version 2 payment codes