Neural dynamics models v0.1.0

First release of the small model collection I rebuilt from my 2021–2022 computational-neuroscience coursework.

It includes:

• Nernst equilibrium potentials with unit checks;
• Morris–Lecar dynamics with RK4 integration and a convergence test;
• seeded Izhikevich E/I networks across three synthetic topologies;
• population spectra, deterministic figures and 14 unit tests.

This release also corrects callable-current sampling at RK4 substeps and one-sided spectrum scaling for odd-length signals. The checked-in results can be rebuilt with python scripts/run_demo.py.