introduce line oriented communication + HasIodev Mixin + minor fixes Change-Id: I22605824d2f45147224840172bae281f85c80a11 Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/21953 Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de> Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>