adding node degrees
new method show in layout
Fixing bug in buildGr - problem to fuse non adjascent cycles
Merge pull request #156 from niamiot/master

Bug fix
Merge branch 'master' of https://github.com/pylayers/pylayers into sig
removing printing debug in buildGv
creating a generic mulplot function in plotutil
new visualization function for slabs
updating slab notebook
correction of aoa and aod  for los ray
Merge remote-tracking branch 'pylayers/master'