Expand changelog.

changelog.md

@@ -5,11 +5,36 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## 6.1.21 - 2024-09-30
 
+### Added
+
+- Enabled the expression engine built by @michaelhthomas. Read more about it in [the documentation](https://docs.firefly-iii.org/references/firefly-iii/rule-expressions/).
+- Add running balance data, see if it can be used in the layout in the future.
+- [PR 9160](https://github.com/firefly-iii/firefly-iii/pull/9160) (add test cases for api/v1/autocomplete/CategoryController) reported by @tasnim0tantawi
+- [PR 9178](https://github.com/firefly-iii/firefly-iii/pull/9178) (Add  test cases for Api\V1\Controllers\Autocomplete\BillController & BudgetController) reported by @tasnim0tantawi
+- [PR 9171](https://github.com/firefly-iii/firefly-iii/pull/9171) (Add about test) reported by @mzhubail
+
+### Changed
+
+- [PR 9096](https://github.com/firefly-iii/firefly-iii/pull/9096) (chore: fix some comments) reported by @withbest
+
 ### Fixed
 
+- [Issue 9078](https://github.com/firefly-iii/firefly-iii/issues/9078) (bcadd exception while using POST transactions) reported by @dbtdsilva
+- [Discussion 9080](https://github.com/orgs/firefly-iii/discussions/9080) (Incorrect sorting on expense accounts) started by @pc-zookeeper
+- [Issue 9084](https://github.com/firefly-iii/firefly-iii/issues/9084) (API Call for bills/nextExpectedMatch does not update) reported by @marcelweikum
+- [Issue 9103](https://github.com/firefly-iii/firefly-iii/issues/9103) (Default Currency does not apply to Accounts.) reported by @chrisgriff1512
+- [Issue 9140](https://github.com/firefly-iii/firefly-iii/issues/9140) (Dashboard 'Today' option chooses 1st of month (not current date)) reported by @PAS-BC
+- [PR 9179](https://github.com/firefly-iii/firefly-iii/pull/9179) (fix Navigation.php MTD logic to make tests pass.) reported by @tasnim0tantawi
+- [PR 9239](https://github.com/firefly-iii/firefly-iii/pull/9239) (Fix webhook index page when Firefly is not served at root) reported by @jfpedroza
+- [Issue 9168](https://github.com/firefly-iii/firefly-iii/issues/9168) (Custom logout URL doesn't work.) reported by @JC5
+- [Issue 9155](https://github.com/firefly-iii/firefly-iii/issues/9155) (internal_reference_is does not correctly match numeric internal references) reported by @Lrns123
 - [Issue 9275](https://github.com/firefly-iii/firefly-iii/issues/9275) (Long wait when editing a transaction) reported by @JC5
 - [Issue 9278](https://github.com/firefly-iii/firefly-iii/issues/9278) (Update to v6.1.20 changed Balance of Account) reported by @JeuJeus
 
+### API
+
+- Expand v2 API
+
 ## 6.1.20 - 2024-09-29
 
 ### Added