Updated RELEASE_NOTES.

RELEASE_NOTES.md

@@ -1,5 +1,9 @@
 # Release Notes
 
+## 2.45
+
+Fixed a minor collision in webfinger caching.
+
 ## 2.44
 
 Fixed a nasty bug that caused the in-memory output queue to be corrupted under heavy traffic loads. This is a good reason to upgrade (thanks to Víctor Moral and Stefano Marinelli for helping me in fixing this).