(2) Support stack based on value (only category axis) but not on index
(3) Fix some defects of List
Fix #7535 Fix #7560 Fix #6861

always show last splitArea

fix and close #7118

fix and close #7422

fix and close #7422

Tweak ordinal collection in dataset when value is number like year, which is expected to be category value but not index.

(2) fix map and pie in dataset.

Fix encode.

(2) fix category axis collect.
(3) some refactor about source and create list.

(2) Support category collection for category axis.

Fix setData in filter, should update task.outputData and outputEnd, otherwise the subsequent task will got wrong range.

If a stageHandler should cover all series, `allSeries` should be declared mandatorily, to avoid some typo or abuse. Otherwise if an extension do not specify a `seriesType`, it works but it may cause other irrelevant charts blocked.