arguments in run() are now optional (I think we should remove them altogether - it's too error prone and is clearly not necessary) + fallback on os.system() if no socket is provided. One more nice idea from Fabrice :-)

compatibility with print() - one more nice idea from Fabrice ;-)

make bezierBasis independant from declaration of element tag in GmshDefines.
move static methods getTag(..) & **FromTag(..) from MElement to ElementType.
completely revert to double for monomials.

Goal: at the end, have only one algo for generation of Points/Monomials/Exponents/.. per element

control the explicit scheme via the python script (onelab integration)