Repo src holds some source code by hkjn.

Some directories hold source code from separate repos outside of src/, which can be initialized with:

git submodule init
git submodule update

These repos were added like:

git submodule add https://github.com/hkjn/probes

The submodule repos can be updated like:

git submodule update --remote probes