chore: update CHANGELOG.md

Author: xsahil03x

packages/stream_feeds/CHANGELOG.md

@@ -8,6 +8,7 @@
   added. Add `onNewActivity` callback to `feed`, `feedFromId`, or `feedFromQuery` to customize.
 - Add location filtering support for activities with `ActivitiesFilterField.near` and `ActivitiesFilterField.withinBounds` filter fields.
 - Add new activity filter fields: `ActivitiesFilterField.feed` and `ActivitiesFilterField.interestTags`.
+- Export previously missing public APIs: models, state objects, and queries.
 
 ## 0.4.0
 - [BREAKING] Change `queryFollowSuggestions` return type to `List<FeedSuggestionData>`.