Bar Chart customisations

[CristianSerea]

Hello guys, i really like this library, but I would like if someone help me to config my chart with these options:

1. Is there any way to add vertical gradient for bar plots?
2. Is there any way to add a left padding between data points (left vertical panel) and the scroll area? I want to avoid overlapping bar plots with the left panel.
3. Is there any way to add some vertical lines between bar plots?
4. Is there any way to get rid of the small line from the left side of the numbers? There is tiny line which can make you think it's minus sign.
   Thanks in advance.