Merge branch 'master' into cosmology

examples/EvrardCollapse_3D/evrard.yml

examples/EvrardCollapse_3D/getReference.sh

examples/EvrardCollapse_3D/makeIC.py

examples/EvrardCollapse_3D/plotSolution.py

examples/EvrardCollapse_3D/run.sh

examples/GreshoVortex_3D/getGlass.sh

examples/GreshoVortex_3D/gresho.yml

examples/GreshoVortex_3D/makeIC.py

examples/GreshoVortex_3D/plotSolution.py

examples/GreshoVortex_3D/run.sh

examples/InteractingBlastWaves_1D/getReference.sh

examples/InteractingBlastWaves_1D/plotSolution.py

examples/InteractingBlastWaves_1D/run.sh

examples/KelvinHelmholtzGrowthRate_2D/getGlass.sh

...elvinHelmholtzGrowthRate_2D/kelvinHelmholtzGrowthRate.yml

examples/KelvinHelmholtzGrowthRate_2D/makeIC.py

examples/KelvinHelmholtzGrowthRate_2D/makeIC_regular.py

examples/KelvinHelmholtzGrowthRate_2D/plotSolution.py

examples/KelvinHelmholtzGrowthRate_2D/run.sh

examples/KelvinHelmholtzGrowthRate_3D/getGlass.sh