Correct DisplayPort lane reporting on docks

What's fixed

Wrong DisplayPort lane info on docks that carry video and USB3 together. On a single USB-C cable, a dock running a display plus USB3 (a hub, ethernet, etc.) splits the connection into 2 DisplayPort lanes and 2 USB3 lanes. WhatCable was misreading this as "4 DP lanes (no USB3 alongside video)", which contradicted the USB3 speed it reported on the same port. It now works out the split from whether USB3 is actually active, so this case correctly shows "2 DP lanes + USB3 data". Thanks @h3x4d3c1m4l for the report and the detailed output (#228).

Startup diagnostics now log at a level that shows up in a plain log show / log stream, so the simple command we share when helping diagnose launch issues actually returns output (#221).

brew upgrade --cask whatcable or download from Releases.