Changes:  - Added get_addr_int() which takes a row and column for a cell and produces the associated alphanum label used by Google Spreadsheets.  This addition is designed to be used with the range() function in order to retrieve cells in a batch way when working with columns in a numerical fashion.  - Added test_get_addr_int() unit test to test the conversion.  - Updated the the get_int_addr() function to reuse some properties required for both.
Changes:
 - Added get_addr_int() which takes a row and column for a cell and produces the associated alphanum label used by Google Spreadsheets.  This addition is designed to be used with the range() function in order to retrieve cells in a batch way when working with columns in a numerical fashion.
 - Added test_get_addr_int() unit test to test the conversion.
 - Updated the the get_int_addr() function to reuse some properties required for both.

wbrp/gspread,amleczko/gspread,tjyang/gspread,peczony/gspread,nateyoder/gspread,brakhane/gspread,suminb/gspread,habibmasuro/gspread,dimartiro/gspread,KandarpShah/gspread,gitqwerty777/myGspread,Squarespace/gspread,JPO1/gspread,ShivaShinde/gspread,azenk/gspread,burnash/gspread,finoptimal/gspread,DanielHabib/gspread,msuozzo/gspread,rohit91/gspread,m4rc1e/gspread,jkhoogland/gspread,paulfitz/gspread