Updated Changelog (markdown)

Changelog.md

@@ -4,13 +4,20 @@ This change log tracks the releases on our [pilot server](https://recodex.mff.cu
 
 | Date | [web-app](https://github.com/ReCodEx/web-app/releases) | [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) |
 | --- |:---:|:---:|:---:|:---:|:---:|:---:|:---:|
+| 21.9.2019     |  v1.18.0 |  v1.18.0 |  v1.6.2  |  v1.3.0  |  v1.2.1  |  v1.0.0  |  v1.1.0  |
 | 23.5.2019     |  v1.17.0 |  v1.17.0 |  v1.6.2  |  v1.3.0  |  v1.2.1  |  v1.0.0  |  v1.1.0  |
 | 15.4.2019     |  v1.16.1 |  v1.16.0 |  v1.6.2  |  v1.3.0  |  v1.2.1  |  v1.0.0  |  v1.1.0  |
 | 24.3.2019     |  v1.15.2 |  v1.15.2 |  v1.6.1  |  v1.3.0  |  v1.2.1  |  v1.0.0  |  v1.1.0  |
-| 8.3.2019      |  v1.15.1 |  v1.15.1 |  v1.6.1  |  v1.3.0  |  v1.2.1  |  v1.0.0  |  v1.1.0  |
 
 Older versions are at the bottom of this page.
 
+## 21.9.2019
+* Adding Go and Rust programming languages.
+* Superadmin may change any user password without verifying old password.
+* Updating email templates to support localized email subjects.
+* Major redesign of web application core to make it compatible with new versions or React and React Router.
+* Improving user's badge, adding ability to change effective role (for superadmin only). 
+
 ## 23.5.2019
 * Implementing first version of system messages (and corresponding admin page).
 * Switch to 24h format for all Datetime form fields (all locales).
@@ -281,6 +288,7 @@ Older versions are at the bottom of this page.
 
 | Date | [web-app](https://github.com/ReCodEx/web-app/releases) | [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) |
 | --- |:---:|:---:|:---:|:---:|:---:|:---:|:---:|
+| 8.3.2019      |  v1.15.1 |  v1.15.1 |  v1.6.1  |  v1.3.0  |  v1.2.1  |  v1.0.0  |  v1.1.0  |
 | 17.2.2019     |  v1.15.0 |  v1.15.0 |  v1.6.1  |  v1.3.0  |  v1.2.1  |  v1.0.0  |  v1.1.0  |
 | 28.1.2019     |  v1.14.0 |  v1.14.0 |  v1.6.1  |  v1.2.2  |  v1.2.1  |  v1.0.0  |  v1.1.0  |
 | 2.1.2019      |  v1.13.0 |  v1.13.3 |  v1.6.0  |  v1.2.2  |  v1.2.1  |  v1.0.0  |  v1.1.0  |