Set aspect ratio for density-temperature plots

[robjmcgibbon]

Update the plot aspect ratio so that more ticks will be shown on the x axis. We still end up with only one tick when comparing 7 simulations, but that never really happens anyway. Examples of different numbers of simulations are below.

[EvgeniiChaikin]

This is a nice solution! Thanks!!

Would it be possible to also modify the following scripts in the same manner, for consistency?

• bh_masses.py
• density_temperature_species.py
• birth_metallicity_redshift.py
• birth_density_metallicity.py
• birth_density_redshift.py
• birth_density_temperature.py
• particle_updates_step_cost.py
• max_temperature_redshift.py
• density_species_depletions.py
• density_species_diffuse.py
• density_species_interp.py
• gas_minimal_smoothing_length_redshift.py

[EvgeniiChaikin]

All looks good and works as expected! Thanks!

e.g. https://swift.dur.ac.uk/COLIBREPlots/chaikin/comparisons/YEAR2023/z0.0_L50N376_incl_destroy_FB_heated_dust/