update changelog

CHANGES.md

@@ -5,9 +5,14 @@
 -   Directories in which application data is stored has changed. App data will be stored in a subdirectory named `darkwrite-data` when running production builds, and `darkwrite-data-nightly` when running development builds. If you are upgrading from 0.1.0-alpha.x, navigate to Darkwrite's data directory (you can use the application menu for this), move `data.db`, `settings.json` and `notes/` into `darkwrite-data/`.
 -   Alternatively, create a backup before upgrading and restore from the backup after upgrading.
 
+## 🌟 Features
+
+-   Import and use custom themes
+
 ## ✨ Improvements and fixes
 
 -   New backups now include a date in their file names by default.
+-   Tweaked emoji picker styles to better follow theme preferences
 
 ## 🛠️ Technical changes