1.6.0

Updates

• Add blending modes (#33).
• Add a fast mode for making cutouts (#34).
• Add option to use a DS9 region file for cutouts.
• Allow setting a pixel size for HiPS cutouts (#28).
• Experimental support for contours on RGB images (#30).

Bugfixes

• Fixed VODownloader.
• Preserve original header keywords in cutouts (#35).
• Removed match statements for Python 3.9 compatability.