RELEASE_NOTES.md in btcruby-1.4 vs RELEASE_NOTES.md in btcruby-1.5

@@ -1,8 +1,13 @@
 
 BTCRuby Release Notes
 =====================
 
+1.5 (November 29, 2015)
+-----------------------
+
+* `BTC::SecretSharing` changes API to support 96-, 104- and 128-bit secrets.
+
 1.4 (November 26, 2015)
 -----------------------
 
 * `BTC::SecretSharing` implements Shamir's Secret Sharing Scheme (SSSS) for splitting 128-bit secrets up to 16 shares.