Working implementation of getAnglePairs, using both simple and linear approximation
getAnglePairs now works with high precision using just the simple approximation method
Just before creating the function phi_at_winDoor_azimuthy_edge
some vertex not found error in the vector plotting code
Configuration defaults moved from getAnglePairs to phi_at_winDoor_azimuthy_edge
whatever
phi_at_winDoor_azimuthy_edge now takes an extra argument

the extra argument is boolean named left.
if true phi_at_winDoor_azimuthy_edge will return the
phi-value of the "left" winDoor azimuthy edge, else the
"right" winDoor azimuthy edge.

left  == the winDoor edge reached when walking positively on the azimuth angle axis
right == the winDoor edge reached when walking negatively on the azimuth angle axis