The original logical will never get font configs from the `textStyle` option, and also the `ecModel` doesn't have other font configs except the `textStyle` option.
`var gTextStyleModel = ecModel || ecModel.getModel('textStyle');`

Fix #11476

(1) Fix that tooltip shows multiple values around both sides of the pointer. Fix #9829.
(2) Fix a probably typo (diff < maxDistance) introduced by https://github.com/apache/incubator-echarts/commit/4ef66e1d892485ced1dbfcf915135e7740bb7cc3
(3) Remove the previous logic to resolve #2869. Because currently if there are multiple values on the same axis tick, both of them will be found and displayed in tooltip by default. The related historical commits:
https://github.com/apache/incubator-echarts/commit/60d341f4ed9e33381099624962a8388eef8a9547  (fix #2869)
https://github.com/apache/incubator-echarts/commit/3426bd0e544b16f90a476cd36a79119c3570a63b  (support find multiple values on the same axis tick).

fix: use the palette color in `line series` when the itemStyle.color is a callback. And enhance the test case for itemStyle.color and lineStyle.color for `line series`. Enhance #11485.

Fix sankey frequent flashing with hovering on the node and edge #11306

* Fix #11300

* Using scale to check if data were contained

fix tree diagram leaves label formatter don't work #11385 #8534 

* fix(line): axis pointer highlights data outside of chart #11360

* fix: should't draw symbol outside clipShapeForSymbol

* Fix #10910

* Add test case

* Refine line color function

* test: add report generation script for visual regression testing

* test(visual): optimize generated report

The bug is fixed in: https://github.com/ecomfe/zrender/pull/522
IOS13 safari probably has a compositing bug (z order of the canvas and the consequent
dom does not act as expected) when some of the parent dom has
`-webkit-overflow-scrolling: touch;` and the webpage is longer than one screen and
the canvas is not at the top part of the page.
Check `https://bugs.webkit.org/show_bug.cgi?id=203681` for more details.

enhance: enhance the behavior that when mouse move is out of echarts are.

fix: category axis label cache causes that label disappear but can not show again when resize. Fixed that. Fix #11112

add test case for #11530

* feat(force): Add initial friction config in force layout #11024

* test(force): Add test case for the friction parameter in force layout

* feat(clip): candlestick add clip option

* a small performance optimization on the clipping of candlestick.

* fix bug #11000

* fix bug #11000

* fix bug #9718

* add test

enhance: enhance the behavior that when mouse move is out of echarts area: the brushed area or dataZoom window will be released at that case, but not keep in dragging state. fix #10675.