Option needed to set import to all varchar

[MrLint]

It seems that in order to import all data as varchar, the only choice is to feed in the list of types as 'varachar' for the number of columns (or greater).

Could an 'all_varchar' like parameter be implemented.

[freddie-freeloader]

Thank you, @MrLint, for opening this feature request. It seems relatively easy to implement & enhances the UX, so we will consider it. 👍