Update changelog for new release.

Author: vmcj

ChangeLog

@@ -1,5 +1,19 @@
 DOMjudge Programming Contest Judging System
 
+Version 8.2.1 - 29 May 2023
+---------------------------
+ - Set the default domjudge_user to the current user at configure time.
+ - Various bugfixes.
+ - Adhere to CLICS 2022-07 again.
+ - Prevent overwriting of local .netrc when installing examples.
+ - Fixed some w3c html violations.
+ - Clarify the need for cgroupv1 when chroot creating fails.
+ - Fix medal awards when skipping categories.
+ - Do not allow to delete problems from a locked contest in the UI.
+ - Disallow submitting to a problem when it does not have testcases at import.
+ - Fix handling of binary files when editing executables.
+ - Recalculate all immutable hashes since the algorithm changed in the past.
+
 Version 8.2.0 - 6 March 2023
 ----------------------------
  - Various bugfixes & UI improvements.

README.md

@@ -6,7 +6,7 @@ DOMjudge
 [![Coverity Scan Status](https://img.shields.io/coverity/scan/671.svg)](https://scan.coverity.com/projects/domjudge)
 [![LGTM alerts](https://img.shields.io/lgtm/alerts/g/DOMjudge/domjudge.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/DOMjudge/domjudge/alerts/)
 
-This is the Programming Contest Jury System "DOMjudge" version 8.2.1DEV
+This is the Programming Contest Jury System "DOMjudge" version 8.2.1
 
 DOMjudge is a system for running a programming contest, like the
 ICPC regional and world championship programming contests.