You can now enable and disable snap to grid when drawing/editing across
all apps. You can also tie snap to grid to the visibility of the grid
to allow rapid enable/disable via grid display.
You can now choose the behavior of dragging with the
middle and right mouse buttons.
You can also choose which modifier keys to use for
panning and zooming with the scroll wheel or trackpad.
You can also customize the zoom speed, which makes
it possible to have a good zoom experience on a wider
range of input devices.
You can also now zoom by dragging with the right or
middle button if desired.
Fixes https://gitlab.com/kicad/code/kicad/-/issues/3885
Fixes https://gitlab.com/kicad/code/kicad/-/issues/4348
A new items is added to the GAL display options (and the dialog), and a
hotkey (Ctrl+Shift+x) is added to toggle it.
Fixes: lp:1673633
* https://bugs.launchpad.net/kicad/+bug/1673633
This is the right implementation of the commit b25ded4d.
Previously if there were tools launched from another tool,
the settings could be stored in a wrong TOOL_STATE object.