#153 -> including support for other API versions >= v16.0.

[Bindambc]

"Now it's possible to change the API version either through WhatsappApiFactory or through the WhatsappApiConfig class.

        //changing API version
        WhatsappApiFactory factory = WhatsappApiFactory.newInstance(TestConstants.TOKEN);

        WhatsappBusinessCloudApi whatsappBusinessCloudApi = factory.newBusinessCloudApi(ApiVersion.V17_0);

or

        //changing API version before instantiating the API client
        WhatsappApiConfig.setApiVersion(ApiVersion.V17_0);
        WhatsappApiFactory factory = WhatsappApiFactory.newInstance(TestConstants.TOKEN);

        WhatsappBusinessCloudApi whatsappBusinessCloudApi = factory.newBusinessCloudApi();

closes #153

[gu1llermo]

Hello buddy, I don't see that option enabled to change the version yet, do I have to do something additional or is it not ready yet?