Hi,
I added this because most of the time I'm using this kind of feature, getting all list series and continuous queries, I haven't put tests about it, because I do not know how yet, but I hope it will be considered. I'm quite new to doing this stuff, so sorry for being quite oblivious about tests and other stuff to consider.

I have aded tests and refactored a little bit. It now uses the query function to avoid code duplication.
Those were both usefull features to add. Thank you! I suggest you take a look at my tests to understand how it's done :)