o vignettes 1-3 have been updated to work with automatic differentiation
o tpm(), forward(), stateprobs(), viterbi() can now be used with inhomogeneous models: call their inhomogeneous counterparts internally
o some functions have been renamed, e.g. stationary_cont() -> stationary_ct() (old versions still exist)
o function MCreport() has been added for sampling
o some internal cleanup