Updated CHANGELOG to include verification updates
Updated CHANGELOG to include verification updates

scottmeyer/braintree_dotnet,ronin1/braintree_dotnet,braintree/braintree_dotnet,ronin1/braintree_dotnet,scottmeyer/braintree_dotnet,braintree/braintree_dotnet,scottmeyer/braintree_dotnet,scottmeyer/braintree_dotnet,ronin1/braintree_dotnet