Be consistent with order, formatting, etc.
Remove debug stuff such as zone timestamp and net code.
Clean up misleading pad messages.
(cherry picked from commit 2132109)
Also makes better use of space to significantly increase number
of markers shown.
Fixes: lp:1748676
* https://bugs.launchpad.net/kicad/+bug/1748676
(cherry picked from commit a1d8097)
The old item pointers (which aren't safe to keep around) were
removed in favour of opaque references (void*) which are then
compared against existing items when needed.
Also improves brightening by brightening the whole footprint
(ie: its pads, drawings, reference and value) rather than just
its target cross.
(cherry picked from commit 30e90b0)