- figure out how Pd-extended is going to load this stuff in order to maintain
  maximum capatibility

- move relevant help patches from pd-extended's pd/doc/5.reference to here

- move relevent help patches from doc/pddp to here

- fix objects so if instantiated with vanilla/bng they retain the namespace prefix

- x_midi.c is very intertwined with s_midi.c

- figure out why delread~ can't get sigdelwrite_class