Now using poetry for packaging and installing! It's easier to maintain and publish package, but means changes when using prismedia from command line.
Prismedia is now seen as a python module, so you need to use `python -m prismedia` (or even directly `prismedia` if you install with poetry) instead of `./prismedia_upload.py`.
### Upgrade from v0.8.0
Now using [poetry](https://python-poetry.org/) for packaging and installing! It's easier to maintain and publish package, but means changes when using prismedia from command line.