unit test for you, and expansion of code


> If your needs are served by the import num_databases support, perhaps we can remove it from new()? 
> If somebody really needs it we can add it, but in the meantime I'm happiest keeping the API identical 
> to Redis.pm.

Sho 'nuff.  I took it out of new(), and added class method so it can still be changed at run-time. Or did you want to remove the run-time option altogether?

(I'm going to push the "Update Pull Request" button assuming it's going to change the code attached to this pull request, let's see...)