use tools in multiple frame at same time like...pixelorama and shift + click

[betotulkas]

Is your feature request related to a problem? Please describe

At the moment this issue is the most important thing to animate because it drastically reduces a lot of animation time, in fact it is why I changed many programs for pixelorama, but pixelorama in my case is slow with a core 2 duo but if I slow down the lines nothing happens , libresprite works better for me but this functionality that pixelorama has changes everything, libresprite has the "link cels" but it doesn't help, because you have to drop the pencil to pick up the mouse and if you do it several times, it's annoying, also if you add another layer Without drawing anything, the "link cels" does not work (when the circle of the frame is empty) on the new layer, as long as the old layer is locked and it is normal because at least I leave the first layer as background and block it, , I think that with selecting them I should be able to let you do that.

Describe the solution you'd like

that in a new layer with only the fact of selecting the layers allows you to work on all of them at the same time, without the need to draw something on the layer for the "link cel" to work. "link cel" also has a defect, unless everything that is needed is the same, which can happen, but it is something that occurs in a very few moments, it makes you have to do "unlik cel" to edit it again. although it does have its functionality, it is very different from working in several frames at the same time, because this "link cel" and "unlik cel" is for more specific situations.

Describe alternatives you've considered

pass the mouse and left click or the pencil on the frames to select them and be able to work on all of them at a time

Additional context