Proposition of extra functionnalities to existing files, new features and dedicated examples

add a remapSlider method used by some GraphicsItems in the functions file, add some extra functionalities to the InfiniteLine and LinearRegionItem items, add a InfiniteLineLabel item, a LinearRegionItemLable item, a CrosshairLabel, a new CounterSlider widget add four dedicated example (on per new item) and modify the __init__ file in the main directory to import the four new files
If you are talking about the AxisItemWidget class, its purpose is to change the margin so that the axis fits best with the QSlider (I just trimmed the left and right part).

If you are talking about thet AxisWidget class, its purpose is to suppress the blank space that appears below the axis without the line:
 self.setMinimumHeight(self.item.height()) 
It is the only way I found to suppress the space. But there may be a better idea.