Update CHANGELOG.md

Author: suriksarkisyan

CHANGELOG.md

@@ -1,5 +1,7 @@
 ## 9.1.3
-* // Update changelog here
+* Updated restore logic to process huge sandbox receipts faster.
+* Fixed [products issue](https://github.com/qonversion/qonversion-ios-sdk/issues/507).
+* Fixed [bundle issue](https://github.com/qonversion/qonversion-ios-sdk/issues/458).
 
 ## 9.1.2
 * Added ability to call `purchase` without providing any options.