Fixed: `plotJonesField` function in `jones` module was doing a numpy swapaxes that was incorrect; also, azimuth computation should have been on [0,2*pi] branch.
Fixed: `plotJonesField` function in `jones` module was doing a numpy
swapaxes that was incorrect; also, azimuth computation should have
been on [0,2*pi] branch.

2baOrNot2ba/dreamBeam,2baOrNot2ba/dreamBeam