model for prob. of being observed

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1311 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
pareto distribution

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1312 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
man

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1313 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
measurement.error added and stack updated

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1314 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
better support for I,poly,bs etc. in formula

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1315 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
iid and predict methods

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1316 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
lifetable factor,numeric fixed. Unit tests for fast.approx

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1317 edb9625f-4e0d-4859-8d74-9fd3b1da38cb