Stefan

Fixes #299

As a quick fix you can do the following: - Select a voice that is available as neural and as standard voice, see [here](https://docs.aws.amazon.com/polly/latest/dg/ntts-voices-main.html), e.g. "Vicki" for German or Ivy...

I have exactly the same issue. I am logging the reading of my gas meter. Based on this data, I want to create a bar chart showing the difference of...