Preparation of release 2.2.2

Author: vkatsuba

CHANGELOG.md

@@ -3,6 +3,22 @@ eradius
 
 A generic RADIUS client and server.
 
+Version 2.2.2 - 23 June 2021
+---------------------------
+
+**Features** :rocket:
+* [#203](https://github.com/travelping/eradius/pull/203) Adding `RADIUS` dictionary for `APC` by `Schneider Electric`
+
+**Bugfixes** :bug:
+* [#192](https://github.com/travelping/eradius/pull/192) Fix building of eradius with `persistent_term`
+* [#204](https://github.com/travelping/eradius/pull/204) Fix gathering of `RADIUS` `Accounting` metrics
+
+**Refactorings** :fire:
+* [#194](https://github.com/travelping/eradius/pull/194) Use `ets:update_counter` to update `RADIUS` metrics
+
+**Dependencies** :gear:
+* [#205](https://github.com/travelping/eradius/pull/205) Update [prometheus](https://github.com/deadtrickster/prometheus.erl) tag to [4.8.1](https://github.com/deadtrickster/prometheus.erl/releases/tag/v4.8.1)
+
 Version 2.2.1 - 4 February 2021
 ---------------------------