Feature Requests: Undo Button, Copy pasting rows of frames in a loop after/befor

[AndreasBlack]

So atm i sit and click with the mouse to add one frame *choose right image number* add a new frame *choose right image number* onto an already existing view loop, cause i want to extend it, since it's impossible to know exactly how many frames i will need to fit the sound effect in this custom animation i'm doing.

This probably has to do with my brainwiring   but i really can't seem to get the animationslength correct at the first attempt.

for some reason sometimes when i click "mouse right click" the whole loop get's deleted, i have no idea why it happens. So i have to re-start AGS to get it back. Cause i can't seem to get it back with ctrl+z or ctrl+alt+z, etc etc typical "undo commands" in software

Thanks