Switch to faraday from rest-client

[oldmax]

We were originally going to use the Cloudinary gem in our rails application, but the dependency on RestClient is a bit of a deal breaker. We would much rather be using Faraday for a few reasons.

1. Significantly better syntax, see documentation here.
2. Proxy settings in RestClient are stored in global state, so can't be set per-request
3. SSLv3 issues

(Sorry for the messy diffs -- looks like my text editor decided to remove trailing whitespace)

[thedrow]

Any chance to see this merged?

[frsantos]

Just passing by to bump this up.

rest-client seems to be abandoned, with just a single release in 2019 after no releases since 2017.

Rest-client seems one of the main gems still using mime-types gem, as the rest have migrated to the less memory hungry mini_mimes. Cloudinary is one of two gems we still use having a dependency on mime-types and we'd like to remove it.

[wissam-khalili]

Hi @frsantos ,

Thank you for your input. I have asked our team to check it and I will keep you posted.

Regards, Wissam

[const-cloudinary]

Fixed in #538