update release notes

ecdsa · ecdsa · commit 4cfa513ff1e6 · 2017-05-13T12:14:29.000+02:00
diff --git a/RELEASE-NOTES b/RELEASE-NOTES
@@ -2,6 +2,7 @@
   * SPV: use binary search to locate connection point
   * SPV: add blockchain checkpoints, configurable by user
   * Fix crash on reading older wallet formats.
+  * TrustedCoin: remove pay-per-tx option
 
 # Release 2.8.2
   * show paid invoices in history tab
