Please add anansi

[Jach]

anansi provides a way to rate-limit concurrent function calls and includes a configurable login verification component for use in a web application. The component can help mitigate denial-of-service attacks on authentication forms that use an expensive hash function.

Source: https://github.com/Jach/anansi
Documentation: https://github.com/Jach/anansi/blob/master/README.md
License: Unlicense / Public Domain