Beta 0.1.0 only per-car properties
Fully functional...
- more robust handling of JSONio.ini property changes (not exhaustively tested for pathological changes)
- plugin WPF displays property and selection changes for both WPF buttons and SimHub events
- WPF display prompts for launching game or Replay to enable property change, then makes buttons visible
- still contemplate X-Y display for evaluating property correlations