only allow single instace - on 2nd, focus 1st + kill 2nd (fixes #84)
only allow single instace - on 2nd, focus 1st + kill 2nd (fixes #84)

greggraf/sciencefair,codeforscience/sciencefair,greggraf/sciencefair,codeforscience/sciencefair,codeforscience/sciencefair,greggraf/sciencefair