Log Message:
libgdiplus: Update to 6.0.4

Alexander Köplinger (3):
      Add Azure Pipelines CI (#600)
      Fix macOS build

Filip Navara (3):
      Fix cut & paste error in gdip_process_bitmap_attributes (#598)
      Fix multiple bugs and conversions for PARGB32 bitmap object and \ 
premultiplied Cairo surfaces (#599)
      Fix memory leak interoduced in 398ad6de93a9b4140a209d9eae8ded9292ffc740 (#603)