test
removed test file
python calling fully functional with multiple processes.
K_overlap giving NaN.
bare bones of testing suite python scripts
fixed K_overlap.f with unspecified k replaced with input k_0
added efficiency $\eta$ to title of tra_spectra.pdf in plotting.py
changed so that plot all spectra and all spectra weighted by solar spectrum on seperate figures.
more modifications to plotting and printing cell parameters in Eficiency.txt
fix rounding of fill fraction
use round() rather than math.ceil() in fortran_call.py
sorting out naming of mesh and overlaying of white cyclinder boundaries for field plots.
single template simo.py file (which calculates ff from given radius1 radius2) and constructs mesh name.
added missing files
moved endif from below "call lattice_vec" to above (around line 510 in main_54.f) which was breaking everything...
before doing multiple heights in one hit.
calculation of multiple heights in the one hit with automated plotting.
Stable version of many height calculation including efficiency for each thickness. Plotting over heights is done with griddata interpolation and then imshow matrix visualisation. Efficiency plot was impossible to get on subplot with absorptance vs height plot.

Also includes the newly sourced material properties with increased wavelength range. Interpolation is now only carried out of those materials used, which was mandated by the data running to different wavelengths.
sorted out plotting with height. 
added animation creation for spectra as a function of height. 
added dispersion diagram plotting.
Added parameter folder back in.
Major modification - addition of 5th FEM element type. Actually no change to FEM routine simple make python code output another set of values for n and set nb_typ_el = 5. Refractive index of this 5th type default Air but can transfrom to any loaded material data and then scaled.

Update to Zn3P2 which is also renamed.