Added cross-platform support for Windows, Linux and macOS in .NET 6, .NET 5 and .NET Core 3.1.
Drawing of 2D graphics:
All algorithms of Plug-in for work with 2D graphics were completely revised.
Now the Plug-in draws 2D graphics using drawing engine (Vintasoft.Imaging.Drawing.DrawingEngine class) and does not use directly GDI+ library (System.Drawing.Common) anymore.
The Plug-in requires a drawing engine: cross-platform drawing engine based on SkiaSharp library (can be used under Windows, Linux and macOS) or the drawing engine based on GDI+ library (can be used under Windows only).
Added the support for Arabic text in XLSX documents.