exists returns boolean instead of integer

[ghost]

According to Redis documentation for exists:

Return value
Integer reply, specifically:

1 if the key exists.
0 if the key does not exist.

[sds]

Thanks for reporting this issue!

Would welcome a pull request with a fix. Thank you!

[ghost]

It looks like going to redis 4.2 changed a lot of the API return values. Is anyone else working this?

[ghost]

I addressed all existing issues running against the latest redis (4.2.1). Ran into an error message on xadd that didn't seem to be consistent from my setup to the Travis build so I documented it and made Travis happy. Please take a look at the PR.