* Simplify div2n1n
* Revert borrow detection, needed a cleverer scheme.
* Getting inspired by uint128 didn't work for recursive. Use recursive algo from the get go
* Fix shl bug ... (need fuzzy testing)
* divmod fixed for single nesting (?)
* Almost there
* Fix one part of div3n2n
* Division is wooorrrrkkinnnggg 🔥
* Fix compilation for the nested version
* forgot to not multiply by 8 the size
* Add another failing shift test
* Fix countLeadingZero for nested uint
* Cleanup: remove debugecho
* Move debug utils in a specific folder
* Fix forward declaration
* Move division it's own file
Mamy Ratsimbazafy