Magick.NET 7.15.5.0

Changes in Magick.NET:

• Added support for the Kapur AutoThresholdMethod (#429).
• Added Complex to MagickImageCollection (#431).
• Fixed stroked rectangle is drawn incorrectly (#591).
• Added optimization for when the collection only contains a single image (#594).

Related changes in ImageMagick since the last release of Magick.NET:

• Stroked dash array render properly again
• Added option to specify the preferred version when writing a PDF file with -define pdf:version=version (e.g. 1.7)
• Label text no longer gets cut-off (reference https://imagemagick.org/discourse-server/viewtopic.php?f=1&t=37621).

Library updates:

• ImageMagick 7.0.10-2