2.28.0

NICLAUSSE Nicolas

@nniclaus

4216c22d · Merge branch 'release/2.28.0' · Mar 30, 2021

 2.28.0 30-Mar-2021
 - add setBackground method in canvas API
 - save seed type and show status for stream tracer
 - bugfix: when re-enabling scalar bar, set it to On if needed