Possibility of allowing for a second Y-axis on the right side of the chart which uses a different scale?

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Hey there, I was just wondering what the possibility of allowing for a second Y-axis on the right side of the chart which uses a different scale might be and then allowing say one line graph to use one, and a second line to use the other? Also, any chance you might ever consider adding bar charts as well? I have been trying out all of the charts out there for flutter and I like this one the best so far, but what would really drive it home would be a bit more flexibility like those I mentioned.

Keep up the great work!

Thanks, -MH