Issue #605 fixed, tested in different scenarios - singleCell check not needed.
Ignore hidden columns as well
lint issues fixed
Note: In Google Sheets, hidden rows and filtered rows behave differently, in fortunesheet its treated the same.
In Sheets, on pasting, filtered rows are ignored but hidden rows are not.
Note: In Google Sheets, hidden rows and filtered rows behave differently, in fortunesheet its treated the same. In Sheets, on pasting, filtered rows are ignored but hidden rows are not.