v3.0.0-beta.3

React API has changed with this version

With the switch from just being a hooks library to a redux implementation, there have been some major changes to how you use the React version of this library.

• the stripe value in the CartProvider /> needs to be your Public Stripe API key.
  Redux doesn't like non-serializable types being passed into it, to mitigate this we had to set up a middleware that handles initializing the Stripe object for you.
• addItem() API has changed to using 2 params instead of 4.
  addItem(productObject, optionsObject = {count: 1, product_metadata: {...}, price_metadata: {...})

The second param is optional, but under the hood, it creates a default for the options object where count is 1