WrenchBoardDocker/assets/demo_data/d3/lines/lines_stacked_nest.csv

1	key	value	date
2	Group1	37	04/23/12
3	Group2	12	04/23/12
4	Group3	46	04/23/12
5	Group1	32	04/24/12
6	Group2	19	04/24/12
7	Group3	42	04/24/12
8	Group1	45	04/25/12
9	Group2	16	04/25/12
10	Group3	44	04/25/12
11	Group1	24	04/26/12
12	Group2	52	04/26/12
13	Group3	64	04/26/12