Seeking the best client-side database for a web-based application that can be manipulated using JavaScript

I've been researching this for some time now, and what I've concluded is that my 3 main choices for client-side databases for web-based applications (that can be manipulated using JavaScript) are the following:

1) Web SQL
2) IndexedDB
3) localStorage

I supposed that Web SQL is out of the question since it's now deprecated -- so strike that I guess.  That leaves me with IndexedDB and localStorage .. (unless some other new DB type is looming on the horizon that I'm unaware of).

I'm a big fan of localStorage, and have already found some suitable libraries for simplifying the setting and getting of data. However, what seems to be lacking is the ability to have have multiple tables, each with it's own sets of columns, and auto-incrementing primary keys, etc (ie: like you can do with MySQL).  Or am I mistaken about that?

Anyways, .. I'm trying to find the best client-side DB solution for a project that I'm working on .. a budget manager application that allows me to track income and expenses and perform calculations against them, etc.  

Is there any way that I can use localStorage in the manner I've described (ie: multiple tables with auto-incrementing primary keys, etc)?  If so, are there any special libraries they I should use that would simplify things (jQuery-based or otherwise)?  

Or should I use IndexedDB for this?  And are there any special libraries available that I can use to that would simplify things (jQuery-based or otherwise)?  

Or is there something brand spanking new that I should be enlightened about?  If so, .. what is it, ... where can I find it, ... and how do I use it?

Thanks!
- Yvan