v1.0.0-beta.0

• Adds support for any compatible fetch implementation. Auto-detects default fetch including client and server side implementations.
• Removes whatwg-fetch as a peer dependency.
• Adds connect.defaults() function to set options and default values for request mappings. Includes type checking of defaults. [docs]
• Adds ability to set buildRequest, fetch, and handle Response implementations in connect.defaults(). [docs]
• Deprecated options argument in connect. Applications that use withRef as an option (i.e. connect(props, { withRef: true })) should change to using connect.defaults (i.e. connect.defaults({ withRef: true })(props)).
• Documented required polyfills.

The features above were delivered in #76 by the amazing @passcod!