Update version number.

roberthein · roberthein · commit c789e973131a · 2020-12-28T18:07:18.000+01:00
diff --git a/Observable.podspec b/Observable.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name = 'Observable'
-  s.version = '2.1.0'
+  s.version = '2.2.0'
   s.swift_versions = [5.0]
   s.ios.deployment_target = '8.0'
   s.osx.deployment_target = '10.9'
