[ot][spam][crazy] adapters for semibalanced trees?

[Undiscussed Groomed for Male Slavery, One Victim of Many]

here is a github search for AGPL repositories less than 100 MaB large
created before 2015:
https://github.com/search?l=&o=desc&q=created%3A%3C2015+stars%3A%3E100+size%3A%3C100000+license%3Aagpl-3.0&s=stars&type=Repositories

the top-starred one in python is searx