atomicwrites' old versions have been purged from pypi

pypi just told me i had to enable 2fa to keep uploading this package. because I thought that was an annoying and entitled move in order to guarantee SOC2 compliance for a handful of companies (at the expense of my free time), i deleted the package and published a new version, just to see if the warning disappears. it did, so that's great.

what i didn't consider is that this would delete old versions. those are apparently now gone and yet it's apparently not possible for me to re-upload them. i don't think that's sensible behavior by pypi, but either way i'm sorry about that. the API has been the same since the first release anyway.