TODOs for default values:
* use b (or #?) for bundles, not a
* code for random port ("init() to random")
* remove rDefaultMissing if possible
* auto range-print
* rEnabled vs rExist:
  * clarify/rename
  * make a clean function?
move code:
ports.cpp => default_values.cpp
rtosc.cpp => ...cmp.cpp?
test:
* zyn fx (all presets)
* rtosc arg val maths
fix all new todos
