quiet mode

[fherreazcue]

Is there an option to make the library quiet?

I am using it in a shiny app, and the server is getting constantly spammed with messages such as these:

[2024-01-16 17:08:34.231083] initialize the original heatmap (ID: ht40) and calculate positions.
[2024-01-16 17:08:34.300186] no area on the heatmap is selected, Do not make the sub-heatmap.
[2024-01-16 17:08:36.369912] make the sub-heatmap (device size: 400x350 px).

Thanks!

P.D.: In a similar vein, being able to silence this warning would be nice:

[2024-01-16 17:08:29.772348] The heatmap is suggested to be updated by e.g. `ht = draw(ht)` before sending to the Shiny app.

Although it can be resolved as suggested, it adds a significant overhead to the page load time.