Merge branch 'release-v0.22.0' into release

Author: brizental

.circleci/config.yml

@@ -152,7 +152,7 @@ jobs:
             source venv/bin/activate
             pip install -r requirements.txt
             glean_parser translate metrics.yaml pings.yaml -f javascript -o generated \
-            --option platform=qt --option version="0.21"
+            --option platform=qt --option version="0.22"
 
             sudo apt-get install xvfb
             xvfb-run python main.py &> qml.log &

CHANGELOG.md

@@ -1,6 +1,13 @@
 # Unreleased changes
 
-[Full changelog](https://github.com/mozilla/glean.js/compare/v0.21.1...main)
+[Full changelog](https://github.com/mozilla/glean.js/compare/v0.22.0...main)
+
+# v0.22.0 (2021-10-06)
+
+[Full changelog](https://github.com/mozilla/glean.js/compare/v0.21.1...v0.22.0)
+
+* [#796](https://github.com/mozilla/glean.js/pull/796): Support setting the `app_channel` metric.
+  - As described in ["Release channels"](https://mozilla.github.io/glean/book/reference/general/initializing.html?highlight=channel#release-channels).
 
 # v0.21.1 (2021-09-30)