Pull request: all: imp changelog

Merge in DNS/adguard-home from imp-chlog to master

Squashed commit of the following:

commit 5080573
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Tue Feb 9 20:30:26 2021 +0300

    all: imp changelog

CHANGELOG.md

@@ -47,7 +47,7 @@ and this project adheres to
 - Improved HTTP requests handling and timeouts ([#2343]).
 - Our snap package now uses the `core20` image as its base ([#2306]).
 - New build system and various internal improvements ([#2271], [#2276], [#2297],
-  [#2509], [#2552]).
+  [#2509], [#2552], [#2639], [#2646]).
 
 ### Deprecated
 
@@ -107,6 +107,8 @@ and this project adheres to
 [#2552]: https://github.com/AdguardTeam/AdGuardHome/issues/2552
 [#2589]: https://github.com/AdguardTeam/AdGuardHome/issues/2589
 [#2630]: https://github.com/AdguardTeam/AdGuardHome/issues/2630
+[#2639]: https://github.com/AdguardTeam/AdGuardHome/issues/2639
+[#2646]: https://github.com/AdguardTeam/AdGuardHome/issues/2646
 
 ## [v0.104.3] - 2020-11-19