contributors.md

Numerous people have improved and corrected the material both in content and spelling. Big thanks to everybody!

Full stack open 2020

https://github.com/fullstack-hy2020/fullstack-hy2020.github.io/graphs/contributors

Full stack open 2019

https://github.com/fullstackopen-2019/fullstackopen-2019.github.io/graphs/contributors

Full stack -websovelluskehitys 2019

https://github.com/fullstack-hy2019/fullstack-hy2019.github.io/graphs/contributors

Full stack open 2018

https://github.com/fullstackopen/fullstackopen.github.io/graphs/contributors

Full stack -websovelluskehitys 2018

https://github.com/FullStack-HY/FullStack-Hy.github.io/graphs/contributors