Set NegativeHeight

[freudarian]

Set a different NegativeHeight, not just mostNegativeValue and negativeSections both which limits your data visualization, but with a height that sets a little bit different proportion (which is not a problem in my case) making it look a bit better and giving it a bit more flexibility for design? When I use negativeSections or mostNegativeValue if the data exceeds the section or value, which is symmetric to the positive value, it just disssappears. It would be great if every data would stay within its borderlimits and ideally percentage wise, doesn't go out of bound.

(sorry, the mobile app of Github mesed up my initial entry)