Get selectors and values from a logic expression

[mmadeira-fuze]

Is your feature request related to a problem? Please describe.
Just an improvement to the README of the project if needed.
We can get the value and selector from a comparison node, but if we have a logic node, for example:
const expression = parse("year>=2003;year<=2004");

How can we get the selector and value from each comparison?

Describe the solution you'd like
Improvement in the README, explaining how to get values from a Logic