GitLab

* add philosophy doc

* fix typos

* update doc

* Apply suggestions from code review
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>

* address Patricks suggestions

* add a training example and fix typos

* jit the training step

* jit train step

* fix example code

* typo

* Apply suggestions from code review
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>