new+fix+breaking: scatter's label argument is now labels, label is now for the legend, closes #88, also the default label for plot1d and scatter defaults first to selection (and for plot1d also the x axis)
new+fix+breaking: scatter's label argument is now labels, label is now for the legend, closes #88, also the default label for plot1d and scatter defaults first to selection (and for plot1d also the x axis)

maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex