String Cleaner: Add Option to convert null to missing

Hi,

in the recent Just Knime It Data challenge the data column “percentage” contains colons. Using the String Cleaner, awesome node by the way, give back a null string requiring to use the string manipulation afterwards.

I’d like to suggest to add an option to convert null to missing so cell which formerly only contained spaces become proper missing cells which are much easier to work with.

Best
Mike