3.1.0

• Update the link suggestion container position (thanks again, @erichalldev)
• Add the option (and command palette command) to turn stacking off (i.e. slide-off mode, like the v1 of Andy's Mode CSS)
• Add the option (and command palette command) to make the rotated header titles face the other direction
• Add a command palette command to toggle rotated headers
• Allow pane resizing (except the last pane, because it doesn't have a handle currently)
• Fix an issue with switching to off-screen panes not animating correctly (can still jump without animation if you switch too far too quickly)