Accept solution with probability np.exp(-(best_val-val)/T)

Add .gitignore

Add .gitignore so that the python cache and generated csv's are not versioned.

See merge request !1

- fix snp_landscape

- remove the need to rename snp
- more info on the expected interface

about metric space and neighborhood.

- use gitlab's markdown
- more exercises

- use sensor_range * domain_width
- add asserts
- cleaner bit.neighborhood