Bump version to v4.0.6

CHANGELOG

@@ -1,3 +1,7 @@
+== Version 4.0.6
+
+* Replaced `cancelled` with `expired` in `ShopifyAPI::ApplicationCharge`
+
 == Version 4.0.5
 
 * Added `pending`, `cancelled`, `accepted`, `declined` helper methods to `ShopifyAPI::ApplicationCharge`

lib/shopify_api/version.rb

@@ -1,3 +1,3 @@
 module ShopifyAPI
-  VERSION = "4.0.5"
+  VERSION = "4.0.6"
 end