Adding extra team / alumni members

Thanks to @dchelimsky for point out missing people, I'll add them here, still need to add a few more.

Team:
- [ ] @yujinakayama 

Alumni:
- [ ] Dave Astels
- [ ] Aslak Hellesøy
- [ ] Chad Humphries
- [ ] Pat Maddox
- [ ] Luke Redpath
- [ ] Justin Ko
Added to the todo, I'll get on it later.