reshMG - killed the nelm specific reshape part
added Enelm - returning reasonable results
Enlm: fique0G (list of expected obs which did not solve the item, for each item in each group) is computed in the estep for the first derivate of nelm.
Enrm: removed redundant lines
1st derivate of nelm in c++
nelm: mue & sigma estimation in c++
nelm: changed 1st deriv R function
nelm: adjusted 2nd deriv to new c++ notation
nelm: adjusted mue & sigma R function
nelm - 1st derivate - bug fixed
adapted nelm, mueNLM and logLIK function to compute with c++ functions.
adapted print and summary functions
bugfix mueNLM
fixed mue estimation
changed from sum(abs(mPARS - PARS)) to LIK(k-1) - LIK(k) < 0.001
--> this saves iterations.
hidden dooptim option deleted in nrm and nelm
nrm - Likelihood based estimation termination - like nelm
it is now possible to supply particular nodes & weights in the case of nonparametric estimation of ability distribution.
one missing "}"
added/changed smth in reshMG documentation
added warning if quads are supplied but nonpar = FALSE