Update mne.pick_channels() to mne.pick()

[sjg2203]

Update mne.pick_channels() to mne.pick(), as mne.pick_channels() is a legacy function.

I wasn't sure how to deal with the changelog as I only updated mne.pick() which works just like mne.pick_channels().

@raphaelvallat, if you have a moment to review?

[raphaelvallat]

Thank you! I'll wait for the CI tests to pass and merge. The PR will be included in the release notes of the next stable version. However, I just released a new version of YASA so I don't think there will be another one in the next couple of months.

[raphaelvallat]

Unit tests are failing because pick does not have argument ordered=, unlike pick_channels:

>       raw_pick = raw.copy().pick(ch_names, ordered=True)
E       TypeError: pick() got an unexpected keyword argument 'ordered'

Could you verify on your own data that pick returns the channels in the specified order? (e.g. as if using .pick_channels(..., ordered=True)

[sjg2203]

Just tested it and both returned the same. mne.pick() orders the channels based their order in ch_names.
I removed ordered=True as it is not available in mne.pick()

Unit tests are failing because pick does not have argument ordered=, unlike pick_channels:

>       raw_pick = raw.copy().pick(ch_names, ordered=True)
E       TypeError: pick() got an unexpected keyword argument 'ordered'

Could you verify on your own data that pick returns the channels in the specified order? (e.g. as if using .pick_channels(..., ordered=True)

[raphaelvallat]

Thank you! Merging now