- bump version number


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pomp@944 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
- fix vignettes to work with new structure
- fix pertussis models to work with pomp v. 0.50
- remove 'data' directory (finally)


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pomp@945 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pomp@946 edb9625f-4e0d-4859-8d74-9fd3b1da38cb