Currently I'm working on multiselection.
I've changed the buggy default for checkboxes
But I need to implement this to all functions
I already implement some shortcuts right now:
CTRL+A = select all
CTRL+D = deselect all
CTRL+F = select all folders
SHIFT+F = select all files
I will implement the rest later and see how to change the buttons interface for a better navigation in portrait mode.