fix #36: allow string integer in config

[ecstrema]

I believe this is the simplest way to fix the issue.

This hasn't been tested. I'll test it if you believe it's worth it.

[Martin005]

@ecstrema Please run Prettier on your changes 🙂

[github-actions[bot]]

:tada: This PR is included in version 1.0.2 :tada:

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