v2.0.0

Breaking Changes:

• MySQLService:
     * query callback now returns a single parameter response object with properties: results and fields for compatibility with promises
• CrudService:
     * _create arguments have changed to data, options, callback, suppressCollisionError has moved into options
     * _createWithRetry arguments have changed to data, objectClosure, options, callback (recursive attempt has been removed)
     * All crud methods return a Promise for async compatibility. Callback is an optional param. Fields have been removed as a response argument.
     * _update is now an async function

Other Changes:

• Updated example app to work with v2 and demonstrated fields too
• Tests: Updated tests to validate v2 changes
• Updated dependencies and configurations
• Updated docs
• Removed yarn