Merge pull request #74 from cwittens/master

Added Collin, Theo, Artemis and Sebastian

Author: ChrisRackauckas

_assets/people.csv

@@ -125,4 +125,8 @@ Shawn Im,Undergraduate,,Alumni,Yes
 Weijian Zhang,Visiting Student,https://github.com/weijianzhang,Alumni,Yes
 Blanca Luo,Undergraduate,https://www.linkedin.com/in/blanca-luo-434097279/,Current Member,Yes
 Astitva Aggarwal,,https://github.com/AstitvaAggarwal,External Collaborator,Yes
+Collin Wittenstein,Visiting Master's Student,https://github.com/cwittens,Current Member,Yes
+Theodoros Xenakis,Visiting Master's Student,https://www.linkedin.com/in/theodoros-xenakis-890268368/,Current Member,Yes
+Artemis Pados,Undergraduate,https://www.linkedin.com/in/artemis-pados/,Current Member,Yes
+Sebastian Schmitt,External Collaborator,https://mv.rptu.de/en/dpts/ltd/chair/staff/sebastian-schmitt,External Collaborator,Yes