Adapt to breaking changes in fafbseg-py

[jefferis]

Inc l2 skels. See https://github.com/navis-org/fafbseg-py/blob/master/changelog.md

[schlegelp]

Was about to open an issue myself but you got there first.

[jefferis]

@schlegelp how do I authenticate fafbseg.flywire now that the default is to use the public dataset only?

[jefferis]

I think I can do something like:

fp.flywire.set_default_dataset('flywire_fafb_production')

to choose the production dataset and it should pick up the auth token from the standard location.

[schlegelp]

Yes, that will set the default dataset for the session. You can also pass a dataset="production" parameter directly to the respective functions.

[jefferis]

closed by #194