tickAmount - serie is not centered

[sebastianbochan]

Let's compare:

• http://jsfiddle.net/rb9p6b6t/1/
• http://jsfiddle.net/rb9p6b6t/2/

When we set tickAmount I think that serie should be in the middle, like in the first example.

[jflambert]

This issue is affecting me. As a workaround I wrote code that detects min==max values and forces min-- and max++ for the xAxis ticks.

[pawelfus]

Another workaround is to set minRange option instead, for example: http://jsfiddle.net/rb9p6b6t/3/