Fix issue #593

[akshay-vashishtha]

The solution to the open issue is mentioned at #593 (comment). To address the problem when using an Excel file with a custom data type, the roo gem was unable to convert it into an integer or float. Therefore, I made changes to the create_date mechanism to identify such cases. Now, if we encounter an exact date instead of a number, the string will be parsed using the Date parser to ensure proper conversion.

[patrickkulling]

@akshay-vashishtha can you please add a suite of tests to validate the previous + new behaviour

[ldodds]

We're encountering this issue with some dates in XLSX files. In our case, the excelx_value value for the cell is returning 2023-10-04T00:00:00. I've confirmed that the branch fixes the date parsing issue. Would be great to get this merged if possible.

[simonoff]

We're encountering this issue with some dates in XLSX files. In our case, the excelx_value value for the cell is returning 2023-10-04T00:00:00. I've confirmed that the branch fixes the date parsing issue. Would be great to get this merged if possible.

Can you make PR your variant please?