0.3.0M4 added to release notes
0.3.0M4 added to release notes

Signed-off-by: Dominic Schabel <faee07a9f96c1dd8c20521161a739f01dd7bbc75@bosch-si.com>

eclipse/hawkbit,bsinno/hawkbit,eclipse/hawkbit,bsinno/hawkbit,eclipse/hawkbit,bsinno/hawkbit,eclipse/hawkbit