* Enable readColumn to read all rows
* Refactor readColumn to use hasRowLimit
* Simplify hasRowLimit condition
* Check less common condition first
* add readColumn test files
* implement readColumn tests for undefined rowLimits
* remove unused variable
* return early if no metadata is present
* address tsc warnings
* add comparison
* clarify that undefined is valid for rowLimit
* remove test files
* verify edge case works when rowLimit is undefined
* add test cases for readColumn
---------
Co-authored-by: Brian Park <park-brian@users.noreply.github.com>
