Updated ReleaseNotes for 4.2

Signed-off-by: Thomas Maisl <exp-122004@maisl.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Data validation

Instead of refusing cylinder pressure data let's just mark it as red when
the values don't seem to make sense.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>