add a changelog.md

Descriptive title for this enhancement

add a changelog.md becuase we still have the old text changelog format

Actual behavior

we only have a changelog in text format created by hand

Expected behavior

use a fully automated Changelog.md

Benefits

changelog based on label from the issues itself

Possible Drawbacks

none

changed due date to March 09, 2021

added PJ1802-0188 label

mentioned in commit 67879bbf

removed due date