bug in antenna np.angle instead of angle
clear notebooks
Merge branch 'master' of https://github.com/pylayers/pylayers

Conflicts:
	doc/notebook/3-antprop/Antennas.ipynb
fixing bug in to3D copy.copy(sig)
new version of Ctilde show function
moving ray index calculation in locbas
ficing bug in handling subsegment in to3D
modif in eval np.newaxis on B and B0
add test-reciprocity.py
check reciprocity interaction and bases
reciprocity is here !!!
reciprocity checked
improvement in bsignal
Merge branches 'niamiot' and 'reciprocity' into niamiot
Merge branch 'reciprocity' of https://github.com/niamiot/pylayers into niamiot
cleaning rays
cleaning in rays
Merge pull request #194 from buguen/master

Fixing reciprocity bug
Clear notebooks
add pattern method to antenna