Oleh Pshenychnyi

Hi @oxinabox , `playOrder` it's just an attribute and it should not change ordering during iteration. It is switched off by default, but you can also disable it in `EpubWriter.DEFAULT_OPTIONS`.

@oxinabox , can you provide me more details? What do you want to sort and what issues `playOrder ` produces?

@eos87 please, take a look and merge if you are ok with it.

Here is a [PR](https://github.com/python-poetry/poetry-core/pull/210)