work in steering behaviors
work in mobility
- add velocity vector vizu
- tests in steering behaviors
 restore steegin behaviors containement
 work in mobility and steering beahviors
add trajectory in body
EXPERIMENTAL
- Add a convex option to build to automatically add ari walls and make any cycle convex.
-improve speed in Body vizualization using mayavi
 add a convenient _plot3d function to Body in order to easily vizualize available C3D body points
work on ssh
Merge branch 'master' of github.com:pylayers/pylayers
mprovement in Body._plot3d()
improvement in Body_plot3d
Merge branch 'master' of github.com:pylayers/pylayers
DLink
-MAJOR BUG FIX : when antenna was changed position and roation was not conserved. Fixed now

Antenna:
- Fix issue in _show3 for Omni antenna
bug fix in plot3d body
First attempt for anim function in body
-anim body including antennas
adding MOCAP.osm
Merge branch 'master' of github.com:pylayers/pylayers