When enabled, foot will ‘damage’ the entire window, instead of just
the modified/updated rows.
This will force the compositor to redraw/blend the whole window.
This can be used to workaround an issue with fractional scaling in
Gnome, where random thin lines may appear.
Try to detect double-width *glyphs* for single-width *characters*, and
allow them to overflow into the next cell.
This is only done for single-width chars with a glyph width that is at
least 1.5 cells wide, but at most 3 cells.
The feature is gated by the new
‘tweak.allow-overflowing-double-width-glyphs’, and is disabled by
default.
Closes#116
