Changelog updated

Author: Webklex

CHANGELOG.md

@@ -6,13 +6,17 @@ Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) princip
 
 ## [UNRELEASED]
 ### Fixed
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+- Search performance increased by fetching all headers, bodies and flags at once #42
+- Legacy protocol support updated
 
 ### Added
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+- Missing message setter methods added
+- `Folder::overview()` method added to fetch all headers of all messages in the current folder
 
 ### Affected Classes
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+- [Message::class](src/Message.php)
+- [Folder::class](src/Folder.php)
+- [Query::class](src/Query/Query.php)
 
 ### Breaking changes
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