sanitized usage of packages in Suggests but not Depends/Imports
-> previously something like stopifnot(require("foo")) and then just
   calling bar() was ok
-> now directly calling foo::bar() is apparently preferred by R-devel
-> additionally one can use stopifnot(requireNamespace("foo")) if desired

test output updated (root node information is printed if terminal)

version number increased



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@592 255f4249-2263-4417-b1ea-8498779e27a7