Updated Changelog (markdown)

Changelog.md

@@ -4,15 +4,17 @@ This change log tracks the releases on our [pilot server](https://recodex.mff.cu
 
 | Date | [web-app](https://github.com/ReCodEx/web-app/releases) | [core-api](https://github.com/ReCodEx/api/releases) | [worker](https://github.com/ReCodEx/worker/releases) | [broker](https://github.com/ReCodEx/broker/releases) | [fileserver](https://github.com/ReCodEx/fileserver/releases) | [monitor](https://github.com/ReCodEx/monitor/releases) | [cleaner](https://github.com/ReCodEx/cleaner/releases) |
 | --- |:---:|:---:|:---:|:---:|:---:|:---:|:---:|
-| XX.12.2020    |  v1.24.0 |  v1.24.0 |  v1.7.1  |  v1.3.0  |  ------  |  v1.0.0  |  v1.1.0  |
+| 7.12.2020     |  v1.24.0 |  v1.24.0 |  v1.7.1  |  v1.3.0  |  ------  |  v1.0.0  |  v1.1.0  |
 | 22.11.2020    |  v1.23.0 |  v1.23.0 |  v1.7.0  |  v1.3.0  |  ------  |  v1.0.0  |  v1.1.0  |
 | 19.9.2020     |  v1.22.1 |  v1.22.0 |  v1.6.5  |  v1.3.0  |  v1.2.1  |  v1.0.0  |  v1.1.0  |
 | 13.8.2020     |  v1.22.0 |  v1.22.0 |  v1.6.4  |  v1.3.0  |  v1.2.1  |  v1.0.0  |  v1.1.0  |
 
 Older versions are at the bottom of this page.
 
-## TBA
-
+## 7.12.2020
+* Judge logs are collected separately (stdout, stderr), exercise may switch between merged/split logs, assignment can select visibility of split logs individually.
+* Signal exit codes are collected presented in solution results.
+* Re-establishing cleanup scripts after FS overhaul.
 
 ## 23.11.2020
 * Fixing some bugs (API v1.23.1 released, compatible with previous release).