Bump version to 0.2.2

- Fix string interpolation for tokens

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = Mopidy-Webhooks
-version = 0.2.1
+version = 0.2.2
 url = https://github.com/powellc/mopidy-webhooks
 author = Colin Powell
 author_email = colin@unbl.ink