add a changes entry for ticket 9574

diff --git a/changes/feature9574 b/changes/feature9574
new file mode 100644 (file)
index 0000000..723606e
--- /dev/null
+++ b/changes/feature9574
@@ -0,0 +1,7 @@
+  o Major features:
+    - Relays now process the new "NTor" circuit-level handshake requests
+      with higher priority than the old "TAP" circuit-level handshake
+      requests. We still process some TAP requests to not totally starve
+      0.2.3 clients when NTor becomes popular. A new consensus parameter
+      "NumNTorsPerTAP" lets us tune the balance later if we need to.
+      Implements ticket 9574.