new methods for emulation



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/easyabc@392 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
source formatting (with formatR, tidy_dir())


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/easyabc@393 edb9625f-4e0d-4859-8d74-9fd3b1da38cb