Use Python logging system for emitting log messages when running via the Python API

[hoechenberger]

Fixes #141

Adds a cli_only kwarg to emit some log messages only when running from the CLI.

[hoechenberger]

@cbrnr Care to test if this works? I don't think the logger honors existing tqdm output, but maybe this is not a problem – I haven't tested it yet

[hoechenberger]

Oh, it seems I've created a nice circular import :(

[hoechenberger]

Import problem should be fixed now but I don't get log messages. @cbrnr feel free to investigate, I'm a bit busy for the next week or so

[hoechenberger]

Problems:

• [ ] Repeated messages regarding using the token
• [ ] Token isn't even needed for this dataset
• [ ] HTTP status codes

[cbrnr]

The token messages also appear on main? Or are they directly caused by changes in this PR?

[hoechenberger]

The token messages also appear on main? Or are they directly caused by changes in this PR?

I don't know. I would believe it also appears in main.

[cbrnr]

OK, so the problems you listed (at least the first two) are not related to this PR and should probably fixed in another PR.

[hoechenberger]

I believe so. Any help in verifying and tracking this would be appreciated!

[hoechenberger]

Nice! Once we have a changelog message, we can merge