Tick count on y-axis

Hi,

When you use c3 without options, ticks on y-axis are matching with the grid and show rounded values, which is great.
The tick count option on y-axis is working well, but shows min, max and values matching the interval (example : min, max and (max/2) if count = 3). It would be nicer, I think, if values could still match the grid, which is easier to read.

Furthermore, max value is a problem when you rotate axis and use 100% of container's width : half of the label will be hidden.

Thanks !

J.