To-do:

Set global parameters (show_pins, ...) and allow override on per-item basis
Generic connectors
- ferrules
- blade terminals
- loose ends
- graphical representation?
Support for cable splicing (as connector type)
new wire look?
- distinguish between cables and wire bundles
improve nomenclature
- terminal (connector, ferrule, blade, loose)
- link (cable, wire bundle)
show from/to inside wire node
Allow custom GraphViz code before/after WireViz-generated code
Display picture of connector underneath (including pin 1 location)
export to PDF with frame, title block, ...
Automatic BOM generation
Allow
make "unit tests" for different features/situations
- missing parameters
- connection formats
  - single wire 1
  - multiple wires [1,2,3]
  - wire ranges [1-10]
- loops
- ...