update changelog

Changelog.md

@@ -2,6 +2,11 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.84] - 2025-01-28
+- Fix budget data import from excel file to include 2016/2021
+- Use the new React compiler for auto-memoized components (as long as they are pure)
+- Require ESLint to pass for builds to ensure future code quality stays high
+
 ## [0.83] - 2025-01-24
 - Allow observers to preview data
 - Migrate to bun 1.2 and Vite to simplify bundling by getting rid of complex webpack configuration