Change export and add SyncResolver

Changes since v1.2.0

Added

• A new SyncResolver was added to support simpler use cases without the use of Promises

Changed

• The default export was replaced with a named export the old import Resolver from 'dafit'will no longer work. Replace by import { Resolver, SyncResolver } from 'dafit'

Context passed to resolving functions

Changes Since v1.1

Added

• A context object can be passed when calling a resolver. The context object will be passed to every resolving function