- Original function Single Cell:
Average time: 1.879472 seconds
Min time: 1.874208 seconds
Max time: 1.882767 seconds

- Cython function Single Cell:
Average time: 0.603006 seconds
Min time: 0.602453 seconds
Max time: 0.603634 seconds

Speedup: 3.12x

- Original function Burst Mode:
Average time: 17.192991 seconds
Min time: 17.174598 seconds
Max time: 17.211236 seconds

- Cython function Burst Mode:
Average time: 1.242232 seconds
Min time: 1.230240 seconds
Max time: 1.258492 seconds

Speedup: 13.84x

refactor:
- chunk_multi: name changed and returns now a list of np.ndarray chunks
- fill_histogram: input argument now is np.ndarray.

test:
Added tests for fill_histogram, chunk_multi, and _peak_position

Allow explicitly passing default values for non-reproducible parameters