optim crate of zyx machine learning library.
This crate contains various optimizers, such as SGD or Adam for optimizing ML models.
For README, quick tutorial and source code, please visit [https://www.github.com/zk4x/zyx].
For more details, there is a [book](https://www.github.com/zk4x/zyx/tree/main/zyx-book).
std - enables zyx-core/std