ensure all contributors are listed in the authors file

[ergo]

Hi guys, I'm cleaning things and adding some missing stuff into the repo (and others), like... full bsd license text ;) I'm listing you here to ensure we have every author of ziggurat contributions signing the authors file. Please add date to your names, thanks!

@virhilo (done) https://github.com/ergo/ziggurat_foundations/commits?author=virhilo

@crooksey (done) https://github.com/ergo/ziggurat_foundations/commits?author=crooksey

@uralbash (done) https://github.com/ergo/ziggurat_foundations/commits?author=uralbash

@marcinkuzminski (done) https://github.com/ergo/ziggurat_foundations/commits?author=marcinkuzminski

@utek (done) https://github.com/ergo/ziggurat_foundations/commits?author=utek

@tdamsma https://github.com/ergo/ziggurat_foundations/commits?author=tdamsma

@arianmaykon (done) https://github.com/ergo/ziggurat_foundations/commits?author=arianmaykon

@TheMightyOnyx (done) https://github.com/ergo/ziggurat_foundations/commits?author=TheMightyOnyx

@ekarlso https://github.com/ergo/ziggurat_foundations/commits?author=ekarlso

[arianmaykon]

Thanks :) PR sent