Action 'cross' doesn't work when one the columns contains an array

[Seddryck]

If you execute the following script:

case scope 'First Set';
case load file 'calculations.csv';
case split column 'alias' with value ',';
case cross 'First Set' with vector 'ref' values 'ref-one';

You'll get an error of type

Type of value has a mismatch with column typeCouldn't store <System.Collections.Generic.List`1[System.String]> in firstColumn Column.  Expected type is List`1.
  ----> System.ArgumentException : Type of value has a mismatch with column type

[Seddryck]

Fix is available at https://ci.appveyor.com/project/Seddryck/nbi/build/1.19.0-beta.10.build.401/artifacts