GleamTech.DocumentUltimate 6.8.0

• .NETFramework 4.7.2

  • GleamTech.Common (>= 5.8.0)

• .NETStandard 2.0

  • GleamTech.Common (>= 5.8.0)
  • System.Drawing.Common (>= 5.0.3)
  • System.Security.Cryptography.Xml (>= 4.7.1)
  • System.Text.Encoding.CodePages (>= 5.0.0)

## Version 6.8.0 - April 2, 2023

 - **Added:** Implemented GleamTech.Drawing namespace to replace System.Drawing.
   Starting with .NET 6, System.Drawing.Common is not supported on non-Windows platforms,
   so dropped dependency to System.Drawing.Common package
   for GleamTech.Common
   but unfortunately we still need it for GleamTech.DocumentUltimate because some format conversions depend on it:
   - Implemented GleamTech.Drawing.Image class which
     - Can load and save file formats Jpg, Png, Gif, WebP, Bmp, Tga, Pbm, Tiff
     - Can handle multi-frame Tiff and Gif images
     - Can resize, crop, rotate, flip, clone, import/export pixel data, draw text, provide detailed image info
     - Can be explicitly cast from/to (via cast operator or via extension methods) other image libraries:
       System.Drawing.Bitmap, System.Drawing.Image
       SixLabors.ImageSharp.Image
       SkiaSharp.SKBitmap, SkiaSharp.SKImage
       Microsoft.Maui.Graphics.Platform.PlatformImage
   - Implemented GleamTech.Drawing.Color struct which
     - Can convert from/to html color codes #RRGGBB or #RRGGBBAA (or short codes #RGB or #RGBA)
     - Can convert from/to named colors
     - Can be implicitly (automatically) cast from/to other image libraries:
       System.Drawing.Color
       SixLabors.ImageSharp.Color, SixLabors.ImageSharp.PixelFormats
       SkiaSharp.SKColor
       Microsoft.Maui.Graphics.Color
   - Implemented GleamTech.Drawing.Font class which
     - Can be implicitly (automatically) cast from/to other image libraries:
       System.Drawing.Font
       SixLabors.Fonts.Font
       SkiaSharp.SKFont
       Microsoft.Maui.Graphics.Font
   - Also implemented GleamTech.Drawing.Rectangle and GleamTech.Drawing.Size structs.

 - **Changed:** Changed type of these properties from System.Drawing.Font to GleamTech.Drawing.Font:
   TextWatermark.Font
   TextWatermark.FontColor
   Changed type of these properties from System.Drawing.Color to GleamTech.Drawing.Color:
   DocumentViewerSearchOptions.HighlightColor
   DocumentViewerSearchOptions.ActiveHighlightColor
   CadInputOptions.RenderBackgroundColor
   CadInputOptions.RenderForegroundColor

   These type changes will trigger a cache migration as in v6.7.0 so be patient when you first open a document:
     With this version, DocumentCache will migrate this change automatically for you, it will scan the cache folder,
     update all .json cache info files, regenerate cache keys (due to json serialization change) and rename cache files to match the new cache keys.
     This migration will be run on first access to the cache, it can take few seconds to complete (may take longer for cloud folders).
     You can check the details and results of the migration in CacheMigrate.log in cache folder.

   You won't need any code change because these new types can be implicitly (automatically) cast from/to System.Drawing counterparts.
   but it's recommended that you adjust your code for the new GleamTech.Drawing classes which is very similar.
 
 - **Fixed:** These properties were not working due to color json serialization change since v6.7.0 (was array, now hex code),
   DocumentViewerSearchOptions.HighlightColor
   DocumentViewerSearchOptions.ActiveHighlightColor

 - **Improved:** Updated jquery to latest 3.6.4 and jquery-ui to latest 1.13.2 for document viewer and ensured CSS is scoped.

 - **Added:** An Action parameter named "configure" to UseGleamTech. It's more neat to set GleamTech products
   related configuration in callback and it has better timing for especially web configuration:
   ```c#
app.UseGleamTech(() =>
{
GleamTechConfiguration.Current.LogEnabled = true;

DocumentUltimateConfiguration.Current.LicenseKey = "QQJDJLJP34...";
});
   ```

 - **Improved:** ExampleExplorer:
   - Added "show system information" button on the top-right corner to display system information in a message box.
   - Show error messages for server handler methods.
   - Refresh page automatically when session is expired.