Add a knob for splitting before an if expr

Closes #255
diff --git a/CHANGELOG b/CHANGELOG
index 978df57..734ae33 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,7 +2,11 @@
 # All notable changes to this project will be documented in this file.
 # This project adheres to [Semantic Versioning](http://semver.org/).
 
-## [0.8.3] UNRELEASED
+## [0.9.0] UNRELEASED
+### Added
+- Added a knob to adjust the split penalty before an if expression. This allows
+  the user to place a list comprehension all on one line.
+
 ### Fixed
 - Don't split before a first element list argument as we would before a first
   element function call.