+ new features

+ Now you can set the quiz to run questions 1 by 1
+ Now you call set cells with a single space (to prevent google spreadsheet cell overlap) and quiz won't explode
+ onFinish callback (returns total questions and right answers)

Hi @AJVicens , i made those changing keeping in mind that the only option is "run questions 1 by 1". So the parameter oneByOne was added lately and is not checked (by reviewing the code it may not work in score () since its not part of 'quiz ' var).
I made the pull so you can check the it and maybe use some code like 'cleanCells' function.