This attempts to fix performance when importing large changesets from schematics.
The appearance control is a BOARD_LISTENER that would otherwise redraw per item imported which may cause lockups
Also a rationalization of text polygon generators, with the "standard"
version inherited from BOARD_ITEM now giving the bounding box. This
requires callers who want the (much) more expensive stroke-based one
to call it explicitly (and brings PCB_TEXT in line with the was FP_TEXT
already was.
Fixes https://gitlab.com/kicad/code/kicad/issues/6525
The new shape architecture gives us the opportunity to make text
selection much more intuitive by actually looking at the glyph
shapes. Before text would be selected when you clicked in the
descenders area (which was usually blank given uppercase letters
and digits).
Fixes https://gitlab.com/kicad/code/kicad/issues/6525
It shows much more detail. Removes some nag dialogs and places
hypertext links in others.
Also fixes the auto-layer-showing to correctly show Edge.Cuts or
F.CrtYd or B.CrtYd for errors relating to them.
Fixes https://gitlab.com/kicad/code/kicad/issues/6446