Title parser: always use line 0 as title per SPICE convention instead
of skipping * comment lines (which consumed component definitions).
Layout engine: pass growing placed set to path tracing to prevent
feedback components (e.g. col→base cap) from being double-traced.
Route feedback paths from the output terminal horizontally right
instead of defaulting to "down" through the transistor body.
Ryan Malloy
347f569968