Make yapf put the correct number of blank lines at --lines boundaries.
This allows YAPF to have the correct line counts in most cases. Namely
lines can be deleted only if they are in the range, but if either side
of a range needs correcting of blank lines more lines can be inserted to
get to the correct number.
diff --git a/CHANGELOG b/CHANGELOG
index f54ccfd..3a3ba8f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,10 @@
# All notable changes to this project will be documented in this file.
# This project adheres to [Semantic Versioning](http://semver.org/).
+## [0.16.4] Unreleased
+### Changed
+- Adjust blank lines on formatting boundaries when using the `--lines` option.
+
## [0.16.3] 2017-07-13
### Changed
- Add filename information to a ParseError excetion.
