* Changes to the response of GraphQL calls to better check for errors.
4.0.1
* Update for more accurate timing
4.0.0
* Added rate limiting abilities (basic)
3.0.3
* Fix for 13 for requests where call limit header is not always supplied
3.0.2
* Adjusted API to work better with Shopify's implementation of GraphQL (10) * `graph()` call now accepts two arguments, `graph(string $query, array $variables = [])`