[FR] Auto-select nearest heading in READING mode

[IanCKW]

Navigating around a file with QuickSwitcher++ in reading would be a lot easier if the current header was selected when QuickSwitcher is launched. Generally speaking, if my notes are so long that I need to use QuickSwitcher++ to navigate within a note, I am reading it in reading mode, rather than editing in in source mode.

There isn't a cursor/caret in reading mode, so perhaps it could select based on what which header previously selected and/or, the topmost visible header on the page.