docs: outline how it works

[MentalGear]

The benchmarks seem very impressive. It would be nice though if you could outline in a few lines how you managed to achieve this, and what the trade-offs are. This would boost confidence and help assessing whether this lib is a fit or not.

[mathcovax]

Hello, yes indeed, that would be a good idea. I will take care of it when I have some time !