Possible typo: `_ncol` instead of `n_cols`.With `_ncol` calling `tikzplotlib.save()` on a plot containing legends results in the error:```Traceback (most recent call last):  File "/home/marvin/phd_scripts/2023_04_14 picoscope/analyzepicoscope_class.py", line 36, in <module>    tikzplotlib.save("picoscope.tikz")  File "/home/marvin/.local/lib/python3.10/site-packages/tikzplotlib/_save.py", line 262, in save    code = get_tikz_code(*args, filepath=filepath, **kwargs)  File "/home/marvin/.local/lib/python3.10/site-packages/tikzplotlib/_save.py", line 213, in get_tikz_code    data, content = _recurse(data, figure)  File "/home/marvin/.local/lib/python3.10/site-packages/tikzplotlib/_save.py", line 352, in _recurse    data, children_content = _recurse(data, child)  File "/home/marvin/.local/lib/python3.10/site-packages/tikzplotlib/_save.py", line 380, in _recurse    data = _legend.draw_legend(data, child)  File "/home/marvin/.local/lib/python3.10/site-packages/tikzplotlib/_legend.py", line 81, in draw_legend    if obj._ncol != 1:AttributeError: 'Legend' object has no attribute '_ncol'. Did you mean: '_ncols'?```