Using redis connection string to cope with node-redis v4 breaking changes

[abhijoshi2k]

Considering how difficult it is to cope with breaking changes of node-redis v4, an option can be added to directly start a separate connection. This option will directly accept the connection URL.
This type of option is accepted in one of the rate limit store package named rate-limit-redis (the option is named redisURL).
Due to this, the above-mentioned package is not affected by the breaking changes.

Similar addition in the conect-redis package may resolve the issues.

[wavded]

@abhijoshi2k thinking about this more. It seems, if you want to use node-redis v4 for other things and connect-redis for sessions. An acceptable solution for the time being would be to add both v3 and v4 as dependencies and pass the v3 client in to connect-redis.

https://stackoverflow.com/a/56495651

We probably could add a note about this in the readme.

[abhijoshi2k]

Hello, that can be a valid solution for the time being. Thanks.
Closing this issue as we have a solution now.