o coordination with the odesolve maintainer to add namespace and make
  rk4 and lsoda a generic function.
o function "fromtoby" to handle different style of time steps
o parameter optimization (model fitting)
o handling of external inputs (requires modification of lsoda/rk4)
o scenario control (e.g. load different presets)
o better example for stochastic CA
o package vignette
o graphical representatiopn of models in the helpfiles???
o dynamic size of internal C buffers for seedfill
o improved dialog version to edit parameters (Tcl/Tk)


