Hello All,
I've submitted version 1.2 to the Asset Store, hopefully it will be live in a few days. I've a couple of requested features I think will really speed up the workflow.
Track Clear - Right click a sample drop section (the box to the left of each track) and select "Clear..." to remove all the steps for that track from the current sequence.
Track Copy and Paste!!!

- Also in the new right-click menu, copy a track in a sequence, paste it to another track (even in a different sequence).
I am still working on some other requested updates, including full sequence copy/paste and accommodating more sequences in the Song Arranger. I've been making notes of the feedback I receive and will keep working to implement your requests, so keep them coming!