Prevent os.walk() scanning excluded dirs. (#898)
diff --git a/CHANGELOG b/CHANGELOG
index b8906d1..a681c6b 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -9,6 +9,10 @@
a custom number of blank lines between top-level imports and variable
definitions.
- Ignore end of line `# copybara:` directives when checking line length.
+### Changed
+- Do not scan exlcuded directories. Prior versions would scan an exluded
+ folder then exclude its contents on a file by file basis. Preventing the
+ folder being scanned is faster.
### Fixed
- Exclude directories on Windows.
