The log viewer tool lets you inspect all the intermediate stages of the routing algorithms. This patch:
- Adds source location tracking of the debug calls (need to use the PNS_DBG macro, sorry)
- Moves some wxLogTrace calls to DEBUG_DECORATOR::Message() so that messages can be displayed alongside the corresponding geometric shapes
The first one keeps a log of events (start routing, mouse motion, etc).
The second allows for adding temporary debug drawings and messages which are stored synchronously with the events in LOGGER.
The event stream together with the PCB design (now with UUIDs) can be used to deterministically replay routing bugs as the user sees them.