Slack tokens are now deprecated

[Freelensia]

https://api.slack.com/changelog/2020-02-legacy-test-token-creation-to-retire

We can no longer create new Slack tokens to use with slack cleaner.
Any work-arounds?

[Samuel Gratzl]

take a look at my maintained fork at https://github.com/sgratzl/slack-cleaner which contained updated information regarding this