Multithreading

[leddcode]

What does it implement/fix? Explain your changes.

Where has this been tested?

Python Version:
Operating System:

Does this close any currently open issues?

Does this add any new dependency?

Does this add any new command line switch/option?

Any other comments you would like to make?

Some Questions

• [ ] I have documented my code.
• [ ] I have tested my build before submitting the pull request.