Implement Add/SubtractRecording classes and +- operators

[alejoe91]

Something that's been on my todo list for a while.

This PR enables one to do recording1 +/- recording2 :)

[h-mayorquin]

I think this will make the data model more expressive. Some edge cases:

• Different number of segments.
• Different number of samples
• Different time parameters (either t_starts or explicit timestamps).

[alejoe91]

I think this will make the data model more expressive. Some edge cases:

• Different number of segments.
• Different number of samples
• Different time parameters (either t_starts or explicit timestamps).

First 2 are enforced and will raise an error if different. Time params are not, but maybe we should?

[h-mayorquin]

Yes, I think we should.

[samuelgarcia]

Cool.
Maybe this could implemented in one class to avoid the copy/paste.

[h-mayorquin]

I think this will make the data model more expressive. Some edge cases:

• Different number of segments.
• Different number of samples
• Different time parameters (either t_starts or explicit timestamps).

First 2 are enforced and will raise an error if different. Time params are not, but maybe we should?

Yes, in my first read I did not realize that this is done do_recording_attributes_match. I think that it can be a separated PR and discussion whether to add time basis to do the do_recording_attributes_match or add another function that checks that.

I am Ok with this.