Update changelog

sandeepmistry · sandeepmistry · commit 31e121bc8652 · 2017-05-02T10:05:41.000-04:00
diff --git a/CHANGELOG b/CHANGELOG
@@ -1,3 +1,7 @@
+SAMD CORE 1.6.16 ????.??.??
+
+* USB CDC: fixed issue of available() getting stuck when receiving ZLP's
+
 SAMD CORE 1.6.15 2017.04.27
 
 * Added missing Windows driver for MKRFox1200
