v0.4.3

Please see the 0.4.3 release notes for more!

• Add tree mark and transforms. 🌲 #136 #841
• Add dense interval option to line and area marks. #351 #597 #792
• Add Plot.column and Plot.transform. #170 #411 #842
• Add function support for the stack transform’s offset option. #814
• Add quantize scale type. #828 #829
• The rect mark may now promote x to x1 and x2, and y to y1 and y2. #831
• Fix type coercion for the bin transform’s inputs. #789 #790
• Fix default format for text and title channels. #793 #794
• Fix rendering of one-dimensional rects. #816 #817
• Fix rendering of swoopy arrows. #832 #833
• Improve error messages. #822
• Improve how facets and axes are implemented. #799
• Improve margins in tests. #838