Add acknowledgements to CHANGELOG for the 2.88 AWS efforts.

CHANGELOG

@@ -10,12 +10,12 @@ version 2.89
 	guarantee that it won't happen. Thanks to Timo van Roermund
 	for reporting the bug and for his great efforts in chasing
 	it down.
-	
-	
+
+
 version 2.88
 	Fix bug in --dynamic-host when an interface has /16 IPv4
   	address. Thanks to Mark Dietzer for spotting this.
-	
+
 	Add --fast-dns-retry option. This gives dnsmasq the ability
 	to originate retries for upstream DNS queries itself, rather
 	than relying on the downstream client. This is most useful
@@ -26,12 +26,18 @@ version 2.88
 	in the cache, but its time-to-live has expired, dnsmasq will
 	return the data anyway. (It attempts to refresh the
 	data with an upstream query after returning the stale data.)
-	This can improve speed and reliability. It comes 
+	This can improve speed and reliability. It comes
 	at the expense of sometimes returning out-of-date data and
 	less efficient cache utilisation, since old data cannot be
 	flushed when its TTL expires, so the cache becomes
 	strictly least-recently-used.
 
+	Add --port-limit option which allows tuning for robustness in
+	the face of some upstream network errors. Thanks to
+	Prashant Kumar Singh, Ravi Nagayach and Mike Danilov,
+	all of Amazon Web Services, for their efforts in developing this
+	and the stale-cache and fast-retry options.
+
 	Make --hostsdir (but NOT --dhcp-hostsdir and --dhcp-optsdir)
 	handle removal of whole files or entries within files.
 	Thanks to Dominik Derigs for the initial patches for this.