Clarify what io/bio mean and document where to get more info

Revert "Add --io as a valid option" not needed I guess?

This reverts commit 17766c4.

Publish on PyPI (#68)

* Add flit config

* Publish to PyPI on GH release

Use the correct short_name for swap

Merge branch 'next'

Merge branch 'next'

Fix a typo on the installer script

Create a new release

Add stripcolor() just in case we need it later

Fix a small Python 3 issue