Handling empty cells in Google Sheets.

[noorbuchi]

We currently have a somewhat of a big problem in SheetShuttle. When the user tries to access cells that are empty, we get different results in the returned data depending on the structure of the table. We also run into big problems when trying to convert that data into a pandas data frame and attempt to specify data types. There is no clear fix for this issue and we need to investigate and discuss things further after exploring the possible options.