Update changelog

CHANGELOG.md

@@ -5,6 +5,21 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Added
+
+- Added `isCarriedForward` to the `MarketData` database schema
+
+### Changed
+
+- Improved the historical market data gathering by storing the market prices carried forward for the most recent dates without data from the data provider, distinguished by `isCarriedForward`
+- Introduced a cooldown of 12 hours for the historical market data gathering of a symbol by retaining the completed jobs
+
+### Fixed
+
+- Fixed the repeated historical market data gathering for symbols without weekend market data on Sundays and Mondays
+
 ## 3.59.1 - 2026-08-23
 
 ### Added