updated version of GraphicalModels from April 2013

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15932 a8012f80-5f13-0410-8dc0-eb77bd940c0d
switch to unix encoding for line endings in package GraphicalModels


git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15933 a8012f80-5f13-0410-8dc0-eb77bd940c0d
add idea

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15934 a8012f80-5f13-0410-8dc0-eb77bd940c0d
Merge git and svn histories

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15936 a8012f80-5f13-0410-8dc0-eb77bd940c0d