1.4.5 - request and streaming updates

This release contains multiple updates for connecting to direct and custom services:

1. You can now define a model for the OpenAI Images API.
2. There are multiple new optional properties that you can use for Cohere APIs.
3. StabilityAI API documentation has been updated.
4. onNewMessage event now includes the actual uploaded file's reference using the MessageFile object type.
5. Adding a new onError event that allows the parent app to monitor chat errors.

This update also includes streaming bug fixes and better console logging when the response format from the server is invalid.