XEROF

Build 4.5.0.18 fixes a number of chart rendering issues and one chart reading issue.

Fixed chart rendering issues :

render optional drop lines to applicable 2D charts (mostly line charts and area charts)
render optional drop lines for line 3D charts and area 3D charts
render axis numbers with locale even when there is no number format (so "0,5" instead of "0.5" if the user country's locale for decimal separation is the comma)
background gridlines thiner and less black in the PDF output
Y axis repositioned when data has both negative and positive values
render pie and doughnut leader lines (between data labels and chart elements)

And also custom data label positions from charts in XLSX and XLSB files were obscured from reading properly due to an artifact.