smart Feature Throws ModuleNotFoundError: No module named 'tc_redis'

[ItsReddi]

When using the /smart/ feature, the following error occurs:

ModuleNotFoundError: No module named 'tc_redis'

This indicates that the tc_redis package is missing. As a user, I expect the smart cropping feature to work without needing to install additional dependencies manually.

Steps to Reproduce:

1. Run Thumbor with /smart/ in the URL.
2. Observe the ModuleNotFoundError for tc_redis.

Expected Behavior:

The /smart/ feature should work without additional package installations.

[kusmierz]

I guess I solved it in #165