* Added a new tolerance parameter specific to the iteration on the riccati equation.
* Added a kalman filter routine allowing for missing observations.
* I do not distinguish anymore models with and without measurement errors (the same m file is used for both models to evaluate the likelihood). For a model without measurement errors H hat to be set to 0 scalar.
git-svn-id: https://www.dynare.org/svn/dynare/dynare_v4@2148 ac1d8469-bf42-47a9-8791-bf33cf982152