- remove unecessary devices arguments in bodies.ini
- typos in simultraj and network
- add a finish flag in simulnet
change default arrive distance
-change distance to check avoidance
default simulnet
changes in deb-Body.ipynb
add setter for L attribute (not only for Lname)
- change attribute name for eva method
new bug fix when colineariy between slab normal and ray vector
- remove topos attribute in _show3() method. Now : Automtically handled
- first step to remove aiwalls from vizualization
Merge branch 'master' of github.com:pylayers/pylayers

Conflicts:
	pylayers/simul/link.py
New feature add a dumpr() in Layout.__init__
Raise an error when layout filename does not exist
fixing bug in calling draw_networkx_edges with linewidth instead of width
presentation PyLayers Overview
adding notebooks