Adding barebones. Closes #1
Adding threads repo to config file
Add 'src/threads/' from commit '29ef5188507425c1c62c04e250a095ba63fedff9'

git-subtree-dir: src/threads
git-subtree-mainline: b02ed5ff5071585a269eaad81f09d862bee3f633
git-subtree-split: 29ef5188507425c1c62c04e250a095ba63fedff9
Adding threads namespace to PSR-4 autoloader