date updated, slightly changed description


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@568 255f4249-2263-4417-b1ea-8498779e27a7
some updates

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@569 255f4249-2263-4417-b1ea-8498779e27a7
added unfinished draft of mtree, still need to thoroughly revise this


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@570 255f4249-2263-4417-b1ea-8498779e27a7
deleted top-level NEWS and merged everything into inst/NEWS



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@571 255f4249-2263-4417-b1ea-8498779e27a7
added CITATION

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@572 255f4249-2263-4417-b1ea-8498779e27a7