minor improvements

Update publish.yaml

update README.md

Merge pull request n3d1117#154 from n3d1117/feature/allow-disable-tra…

…nscription-and-image-generation

Allow disabling image generation and transcriptions

also handle generic error while streaming response

Update publish.yaml

use async version of openai methods

minor improvements

added `N_CHOICES`, `TEMPERATURE` and `IMAGE_SIZE` to the `.env` file

minor improvements