Fix #3472: Configurable option to encode spaces in dropdowns

framework/CHANGELOG.md

@@ -4,6 +4,7 @@ Yii Framework 2 Change Log
 2.0.0-rc under development
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+- Enh #3472: Added configurable option to encode spaces in dropDownLists and listBoxes
 - Bug #1263: Fixed the issue that Gii and Debug modules might be affected by incompatible asset manager configuration (qiangxue)
 - Bug #2563: Theming is not working if the path map of the theme contains ".." or "." in the paths (qiangxue)
 - Bug #2801: Fixed the issue that GridView gets footer content before data cells content (ElisDN)