title: Gspread update value without getting it first / addition to cell directly
body: <p>Currently using gspread and python. Currently to update values on my spreadsheet I have to grab values from sheet, update them and then write back.</p>
  <p>What i am looking for is...say I have a cell with a value of 5, is there a way to make an api call that says add +5 to &quot;x&quot; cell? I would no longer need to grab the values first, which even saves an api call. I don't know if this command is available or anything similar is, but would appreciate any help here!</p>