Toggle view mode resets cursor location in note

Current behavior

When toggle single pane mode and double pane mode, the location in note will be disturbed

And in single pane mode, toggle between edit mode and render mode will also disturb location of render pane

Expected behavior

It would be better if boostnote remember position when toggling view mode.

Sreenshot

now: after toggle, it come back to the top

Environment

• Version : 0.11.
• OS Version and name :archlinux