Pdfcrowd API client libraries updated to 4.4.2

We added new methods that allow to specify image compression and DPI:

• setConvertImagesToJpeg()
• setJpegQuality()
• setImageDpi()

Fixes:

• Trailing blank pages were not discarded when a non-default PDF page background color was used.
• PDF was not linearized correctly when viewer preferences were set.