3.5 is stable.

oldestlivingboy · oldestlivingboy · commit d8ab03224bc3 · 2014-06-20T17:24:51.000-07:00
diff --git a/README.md b/README.md
@@ -46,7 +46,7 @@ After running this close your terminal and then open it again. Then install lxml
 Hacking on the Source Code
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-Please work off of the "3.0" branch if you're submitting changes to the latest stable release and use "master" if you're submitting changes to the latest development release.
+Please work off of the "3.5" branch if you're submitting changes to the latest stable release and use "master" if you're submitting changes to the latest development release.
 
 ### Writing rulesets
 
