Thanks, DiegoM, for this great new feature!
Will it be possible to add "On keyframe reached" triggered event? I'm not entirely sure how it will work with different instances and properties, but this would definitely be a useful addition.
Let's say I want to change animation frame of the sprite at the keyframe. Currently the only way to do this is to compare Timeline.Time or Progress on every tick, which is not very convenient.
I guess this can be worked around with an instance variable, which you set to different values on each keyframe, but I can't test it - my C3 crashes all the time when I'm trying to add instance variables to the timeline...