Feature request: Missing value handler to work directly on integer columns

[daholste]

When I run missing value handler on integer columns, I get:
Error: *** System.InvalidOperationException: 'No IsNA predicate for 'Int64''Traceback (most recent call last):

It could be cool for missing value handler to automatically convert numeric integer columns to 'float' behind the scenes

[ganik]

Indicator transform needs int_to_r4_converter