ras
fixing bug
computign mu in intersect
updating body
fixing confict
Fixing critical bug for properly handling antenna in channel.py
Merge branch 'master' of https://github.com/pylayers/pylayers
change in antenna
Merge branch 'master' of https://github.com/pylayers/pylayers

Conflicts:
	pylayers/antprop/channel.py
bug fix in Person
Merge branch 'master' of https://github.com/pylayers/pylayers
bug fix :
- seed fix
- improve plot in trajectory
Merge branch 'master' of https://github.com/pylayers/pylayers
add replay trajectroy method
add easygui.choicebox for editing segment property in Layout.editor
add load hfss method to antenna
update plot docstring to be compliant with the new trajectroy object
add notebook on body
modif in notebook
Merge branch 'master' of https://github.com/pylayers/pylayers