Update plot routines

src/2DPhaseDiagram_PlotScript.py

src/PhaseDiagram.py

src/PhaseDiagram_PlotScript.py

src/PhaseDiagram_PlotScript_BetaSmallerOne.py

src/Plot-Angle-Gamma.py

src/Plot-Angle-q3.py

src/Plot-Curvature-Gamma.py

src/Plot-Curvature-q3.py

src/Plot_Prestrain_Lemma1.4.py

src/Plot_aStar.py

src/plot-q3-gamma.py