Update CHANGELOG

CHANGELOG.md

@@ -1,3 +1,14 @@
+2.6.4 (09/21/2015)
+------------------
+
+* Changed cURL bindings to use Bytes instead of String for callbacks
+* Fixed iOS support for CFFI prime (requires HXCPP update)
+* Reverted SDL2 version to fix regression in iOS window size
+* Disabled Cairo finalizer (for now) to resolve some crash problems
+* Reduced "unreachable code" warnings in Firefox
+* Fixed iOS multitouch behavior (legacy)
+
+
 2.6.3 (09/19/2015)
 ------------------