Loosen faraday requirements to allow 0.10 to be picked up
Created by: andrew
Used a similar upper version to what @Mislav did in https://github.com/lostisland/faraday_middleware/commit/6532e65c3e25ce8bdf884d118602a41efc0d42e3#diff-2c97a3fba04553020532f4508b0b3bb4