Hi and Welcome to the Skyline Forums creativeocclusion
I am happy that you like skyline.
The free version of skyline does allow you to split animations using the mesh editor using the timeline. (i think our timeline only starts having issues when you pass into multiple thousands of frames to split, also the animations need to be 1 key frame per frame as this may mess animation frame numbers up).
Our goal with the free version was too provide an engine that had all the features of the purchased minus a few limited number of features that could act as a trial version with no limitations in order to purchase the engine.
Tattie's video are very good and will be helpful once they are back online.
If you find the animation splitter is not good enough for your animation splitting, then we can improve this feature as skyline is still in Beta.