Changes from 0.9.0 to 0.9.1

1) Added case replicate-weights to save computational load in fitting
latent class models on categorical data.  Markovdata now has an extra
argument which can be used to provide the number of replicates for each
case. 

2) Updated references and added a vignette called depmix-intro. 

Changes from 0.9.1 to 0.9.2 

No changes except the addition that the package is now ORPHANED; this is 
an automatic change in the CRAN repositories because warnings occur.


Changes from 0.9.2 to 0.9.3 

1) Optimization is now done using the Rdonlp2 package by Tamura (optional 
support for NPSOL also still exists); the major advantage of this is that 
donlp2 handles general linear constraints without problems.

2) Options for optimization with nlm and optim are removed as they were 
functioning suboptimal in some cases and have become unnessary.


Changes from 0.9.3 to 0.9.4

1) Minor changes in C++ headers to make them compatible with new g++ versions. 