v0.6.3

Please see the 0.6.3 release notes for more!

• Add auto mark. #1238
• Add axis and grid marks. #1197
• Add anchor option for the frame mark. #1241
• Add mark.facetAnchor option. #1197
• Add mark margin options for affecting the plot’s default margins. #1197
• The x and y axes now automatically repeat in empty facets. #1197
• The text mark now supports soft hyphenation. #1197
• Fix a crash with the raster mark when using an identity color scale. #1237
• Fix the voronoi mark’s handling of the target, mixBlendMode, and opacity options. #1259