Update changelog to note that lang is now case sensitive. Closes #670

Author: brendan-kellam

CHANGELOG.md

@@ -56,6 +56,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Changed the default search behaviour to match patterns as substrings and **not** regular expressions. Regular expressions can be used by toggling the regex button in search bar. [#623](https://github.com/sourcebot-dev/sourcebot/pull/623)
 - Renamed `public` query prefix to `visibility`. Allowed values for `visibility` are `public`, `private`, and `any`. [#623](https://github.com/sourcebot-dev/sourcebot/pull/623)
 - Changed `archived` query prefix to accept values `yes`, `no`, and `only`. [#623](https://github.com/sourcebot-dev/sourcebot/pull/623)
+- Changed `lang` query prefix to be case sensitive. [#623](https://github.com/sourcebot-dev/sourcebot/pull/623)
 
 ### Removed
 - Removed `case` query prefix. [#623](https://github.com/sourcebot-dev/sourcebot/pull/623)