Update Changelog

CHANGELOG.md

@@ -2,7 +2,9 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.12.0](https://github.com/bizz84/SwiftyStoreKit/releases/tag/0.12.0) Add `verifySubscriptions` method for subscription groups 
 
+* Add `verifySubscriptions` method to check all subscriptions in a group at once ([#333](https://github.com/bizz84/SwiftyStoreKit/pull/333), related issue: [#194](https://github.com/bizz84/SwiftyStoreKit/issues/194))
 * Add video tutorials section in README ([#328](https://github.com/bizz84/SwiftyStoreKit/pull/328), [#330](https://github.com/bizz84/SwiftyStoreKit/pull/330), see [#326](https://github.com/bizz84/SwiftyStoreKit/issues/326))
 * Update iOS Demo App ([#327](https://github.com/bizz84/SwiftyStoreKit/pull/327), see [#147](https://github.com/bizz84/SwiftyStoreKit/issues/147))