What tools can I use to get better prices on a large list of parts on Bricklink? I prepared a long list of parts (Wanted List) that I want to buy using Bricklink. It is clear that I won't be able to get all the parts I need from a single seller and have identified three Bricklink stores that can cover the full list of parts I need.

What tools can I use to distribute the parts I need across the three stores to get the best prices? 

Previously there have been tools like Brick Wizard and Brickficiency but those do not seem to work with the updated Bricklink website. Are there currently any alternatives? I'm not shy to do some programming myself, but maybe there's a good starting point somewhere?
A new developer has updated Brickficiency to the new Bricklink API...

You can download it here: https://github.com/WindmillHelix/Brickficiency2/releases

I've tested it shortly, it seems to work as well as the old Brickficiency.
Haven't tested it well enough to check if it provides significant better options than Bricklinks own Easy Buy feature... 

Just like the old Brickficiency, it's infeasible to process significantly long Wanted Lists as it uses a brute force approach (simply trying all store combinations)...