Bump version to MINOR release 2.3.0
Bump version to MINOR release 2.3.0

Release Notes:

Features:
* Add support for static reprompts
* Add new DISCONNECT intent for Smart Home

Other Changes:
* Change express snippet to use multiple routes
* Fix deeplink Dialogflow snippet typo
* Add eofline rule to tslint
* Regenerate GoogleActionsV2OrdersReceipt
* Add @hidden to _middlewares
* Add typedoc.json to npm ignore

Change-Id: Ie9d381041f10d6b4d7d659a4313ea638c150a27b

actions-on-google/actions-on-google-nodejs,actions-on-google/actions-on-google-nodejs,actions-on-google/actions-on-google-nodejs