> this should live inside utils or so.

wow, I'm actually having problems with moving iter_filter_epochs to utils...

it depends on Epochs, so I have to import it, but, curiously, no mne function is imported from utils, so that feels weird... and when I try to import it (`from . import Epochs` or `from .epochs import Epochs`) I get an error because when `import mne` is first run, `__init__` imports some things from `utils` and that fails because `utils` tries to import `Epochs` before they were mentioned in `__init__` nice... any ideas? In general though, looking at the things in utils, this doesn't seem to belong there - aren't utils really for generic python stuff, not actual things that operate on mne M/EEG objects? Just being nosy and curious... Maybe this could land in `epochs.py`, since it's a generator for Epochs objects?