Bump the Version

Merge pull request #19 from AgencyPMG/update_reactver_lifecycle

Update reactver lifecycle

Mark Version 0.9

Bump version to 0.8.0

Support for React 15.5+

Form Data is Now a Property

Introduce form.getData

As a way to get all the current data in the form.

Provide the Previous Field Spec to Field Spec Callbacks

So users can decline an update if they desire.

Programmatic Value Changes

Add a `setValue` method to all fields to programmatically update the
underlying form value.

Add a `map` Method to Collection Fields