Android 5.0 Map is not defined

This would be a nice little feature to have, Excel users are using this a lot.

Is your feature request related to a problem? Please describe.
I tried to set a dark color and decrease symbol size for BarCanvas legends but changing the configuration didn't affect the chart. I found the cause in the repository, the symbol size and the color are hardcoded in the source code of BarCanvas:
![Képernyőkép erről: 2020-04-24 11-22-18](https://user-images.githubusercontent.com/32

问题
跨sheet的公式初始化的时候不会生效

背景
引用的第二个表的数值本身就是一个公式sheet1的值也没变 , 直接改那个值也没变，但是直接编辑上去的就没有这个情况，导入的会有

屏幕截图或演示

跨表引用公式.xlsx

Page: Using a JavaScript module as a worker

This code example appends a canvas to the existing canvas#output, which is not valid. Maybe replace canvas#output to div#output, or reusing canvas#output to paint the image without creating a new one every time.

-<canvas id="output"></canvas>
+<div id="output"></div>